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MID 144 Fault Codes DTC


Volvo Renault, Mack  MID 144 - Decryption of Codes of Malfunction DTC.

 

Error Code, Parameter, Description

 

Truck Control Unit

 

MID144 PID29 FMI3

Accelerator Pedal Sensor 2. (only for truckss with dual control)

Voltage of the signal from the pedal sensor is higher than 4.3 V. Breakage of the ground wire. Shorting the signal wire to a higher voltage. Defective sensor or idle switch 3

accelerator pedals.

 

MID144 PID29 FMI4

Accelerator Pedal Sensor 2. (only for cars with dual control)

Signal voltage from the pedal sensor is below 0.4 V. An open signal or supply wire. Shorting the signal wire to ground. Pedal sensor may be defective.

 

MID144 PID46 FMI0

Primary Air Pressure (only for trucks with air suspension)

Pressure in the Air Duspension Receiver is above normal. The compressor discharge valves in the compressor head are faulty, the wiring of the Compressor discharge solenoid valve in the dehumidifier is damaged. Damaged, dirty or clogged valve compressor discharge valve in the dehumidifier. Air pressure sensor is faulty (the sensor is located behind the instrument panel on the right).

 

MID144 PID46 FMI1

Primary Air Pressure (only for vehicles with air suspension)

Truck control unit receives a signal from a sensor with a voltage below 3.1 V (corresponds to 9.7 bar) for the older version and below 2.6 V (corresponds to 8.0 bar) for the newer version. Air pressure below normal. Air leak, clogged, damaged air lines or air suspension components.

 

MID144 PID46 FMI3

Primary Air Pressure (only for vehicles with air suspension)

Vehicle Control Unit receives a signal from a sensor with a voltage above 4.5 V (corresponding to 15 bar). Open wire connection to ground. Shorting the signal wire to a higher voltage. Air pressure sensor may be defective (the sensor is located behind the Instrument Panel on the right).

 

MID144 PID46 FMI4

Primary air pressure (only for vehicles with air suspension)

Vehicle Control Unit receives a signal from a sensor with a voltage above 0.5 V. An open signal or supply wire. Shorting the signal wire to ground. Air Pressure Sensor may be defective.

 

MID144 PID46 FMI14

Primary air pressure (only for vehicles with air suspension)

Manifested when the signal from the truck Control Unit is sent to the dehumidifier, and air pressure in the system continues to increase. Damaged or clogged compressor valve control pipe from dehumidifier. Faulty valves in the Compressor head (jammed in the closed position). Damaged wiring between the car control unit and the unloading valve on the Dehumidifier. Damaged, dirty or clogged valve compressor discharge valve in the Dehumidifier. Air pressure sensor is faulty (the sensor is located behind the Instrument Panel on the right). Safety valve should go off. If the safety valve is clogged and doesn't work, it is possible that the Compressor head seals fail and a large amount of air from the Compressor enters the Engine Cooling System.

 

MID144 PID84 FMI2

Truck Speed Signal

Bbig Difference between the speed signals coming from the tachograph (via the SAE J1939 data channel or to the contact of the vehicle control unit) and the speed signals from the wheel rotation sensors (ABS). Before troubleshooting the system of the car control unit, read the ABS / EBS error codes and eliminate the causes of their manifestation. Also possible that the wiring is faulty or the signals from the tachograph are not correct. Perhaps there were manipulations with the speed sensor or with the wiring between the speed sensor on the gearbox and the tachograph.

 

MID144 PID84 FMI14

Truck Speed Signal

Speed Signals from the Tachograph aren't correct. Damaged circuit. Speed Sensor on the Gearbox or Tachograph may be defective.


MID144 PID86 FMI14

Preset Speed (Cruise Control)

Vehicle Control Unit (VECU) doesn't receive information from the adaptive cruise control (ACC) Control Unit via the SAE J1939 data channel. Broken or partial damage to the data channel. Perhaps the ACC block is faulty.

 

MID144 PID91 FMI3

Accelerator Pedal Position

Voltage of the signal supplied to the Control Unit from the accelerator pedal sensor is higher than 4.3 V. Breakage of the power or ground wire. Shorting the signal wire to a higher voltage. Perhaps the pedal position sensor or pedal idle switch 1 is faulty. Sensor and switches are integrated with the accelerator pedal.

 

MID144 PID91 FMI4

Accelerator Pedal Position

Voltage of the signal supplied to the Control Unit from the accelerator pedal sensor is below 0.4 V. Breakage of the power supply or signal. Shorting the signal wire to ground. Defective or oxidized contacts in the connectors. Accelerator pedal position sensor may be malfunctioning.

 

MID144 PID91 FMI5

Accelerator Pedal Position

Low level signal from the Position Sensor doesn't correspond to the signals from the no-load switch 1 or 2. Faulty Pedal Position Sensor. Damaged or oxidized contacts in the connectors.

 

MID144 PID91 FMI6

Accelerator Pedal Position

The high-level signal from the Position Sensor does not correspond to the signals from the no-load switch 1 or 2. Faulty Pedal Position Sensor. Damaged or oxidized contacts in the connectors.

 

MID144 PID91 FMI14

Accelerator pedal position

Malfunction in a food chain. Open or partial damage to the power cord.

 

MID144 PID150 FMI4

Power take-off

Voltage at the contact of the Vehicle Control Unit with the unused function below 2.3 V. Breakage of the power supply wire of the power take-off solenoid valve. Open wire between valve and control unit. Damaged or oxidized contacts in the connectors. Solenoid valve may be defective.

 

MID144 PID152 FMI12

Number of Reinstallations of the Vehicle Control Unit.

The code is registered in the event of an internal malfunction in the software, while the internal independent function of restarting the vehicle control unit is triggered. The code is informational and is not a malfunction code.

 

MID144 SID230 FMI7

Idle Switch 1 of the accelerator pedal

Accelerator Pedal is fully released, and the signal from the Idle Switch doesn't enter the vehicle control unit. Open signal or supply wire. Shorting the signal wire to ground or to plus. Damaged or oxidized contacts in the connectors. Switch integrated with the accelerator pedal may be faulty.

 

MID144 SID231 FMI2

Data Channel SAE J1939

Control Unit doesn't receive messages on the SAE J1939 data channel. Interruption or partial damage to the data channel circuit. Damaged or oxidized contacts in the connectors.

 

MID144 SID231 FMI12

Data Channel SAE J1939

Control Unit doesn't receive messages on the SAE J1939 data channel. Interruption or partial damage to the data channel wiring. Damaged or oxidized contacts in the connectors.

 

MID144 SID250 FMI2

Data Channel SAE J1708

Faults in messages on the data channel SAE J1708. Partial damage to data channel wiring.

 

MID144 SID253 FMI2

EEPROM Calibration Memory

Programming error or a malfunctioning memory chip in the Control Unit. Try re-programming the unit (only performed at authorized service stations)

MID144 SID253 FMI14

Calibration Memory EEPROM

Fault in the data. Memory chip in the control unit is faulty or software error. Try to reprogram the unit (performed only on authorized service stations).

 

MID144 PPID3 FMI3

Starter Relay

Very high current through the power cascade. Circuit to plus power. Faulty wiring or short-circuit in the relay winding.

 

MID144 PPID3 FMI4

Starter Relay

Relay, wire break or mass short circuit faulty.

 

MID144 PPID61 FMI7

Decelerator switch

Wiring or switch is faulty.

 

MID144 PPID69 FMI3

Buffered No-Load Switch

Signal from the buffered no-load switch does not correspond to the signal from the accelerator pedal switch #1. The signal wire is closed to mass.

 

MID144 PPID69 FMI4

Buffered no-load switch

The signal from the buffered no-load switch does not correspond to the signal from the accelerator pedal switch #1. The signal wire is closed to mass.

 

MID144 PPID70 FMI4

Power Supply to Accelerator, brake and clutch pedal switches

Vehicle Management Unit has detected voltage below 3 V on the switches' power lead. Closing the power cable by mass, closing the signal cable of the accelerator pedal, brake or clutch switch by mass.

 

MID144 PPID71 FMI4

Power to the Retarder and Cruise Control Switches

The Vehicle Management Unit has detected voltage below 3 V on the switches' power lead. Closing the power cord to mass. Closing the signal wire of the cruise control switch. Signal wire short circuit on the VCB/EPG motor brake switch signal cable by weight. Signal wire short-circuit to the SET+/SET-/RESUME / ON switch signal wire weights.

 

MID144 PPID72 FMI3

Power Supply to Accelerator Pedal Sensor and Retarder Switch

Truck control unit detected a voltage of more than 5.3 V on the power cord. Breakage of the mass wire, short-circuit to a higher voltage, breakage of the supply wire. The retarder switch or accelerator pedal sensor may be faulty. Pins in the connectors are damaged or oxidized.

 

MID144 PPID72 FMI4

Power Supply to Accelerator Pedal Sensor and retarder switch

Vehicle control unit detected a voltage below 4.7 V on the power cord. There may be a malfunction in the retarder switch or accelerator pedal sensor.

 

MID144 PPID73 FMI3

Power supply for Air Pressure sensor in primary receiver (pneumatic suspension) and switch Dynafleet 

Vehicle control unit detected a voltage greater than 5.3 V on the power cord. Mass wire break, power wire break to higher voltage, power wire break. Air pressure sensor (located behind dashboard on the right) or switch Dynafleet may be faulty.

 

MID144 PPID73 FMI4

Power supply for air pressure sensor in primary receiver (pneumatic suspension) and switch Dynafleet

Vehicle control unit detected a voltage below 4.7 V on the power cord. Closing the power cord by mass. Air pressure sensor (located behind the dashboard on the right) or switch Dynafleet may be faulty.

 

MID144 PPID74 FM 3

Power supply for engine management unit (EECU) and vehicle management unit (VECU)

Control voltage of relay K2 from contact PH15 of the car control unit is higher than 1 V. Short circuit to higher voltage or faulty relay K2 (located on the central distribution board of the relay and fuses in the middle of the instrument panel)

MID144 PPID74 FMI4

Power Supply for engine management unit (EECU) and vehicle management unit (VECU)

Control voltage of relay K2 from contact PH15 of the vehicle control unit is below 0 V. Wire break from relay K2 or faulty relay.

 

MID144 PPID75 FMI3

Demultiplier Lock

Vehicle control unit registers the voltage above 6.5 V on contact PB18. Closing of the wire between the demultiplier interlock solenoid valve (located at the back of the gearbox on the demultiplier cylinder) and the vehicle control unit on the power supply wire. The solenoid valve may be defective.

 

MID144 PPID75 FMI4

Demultiplier Lock

Vehicle Control Unit registers the voltage below 2.3 V on contact PB18. Breakage of the solenoid wire of the demultiplier interlocking valve. Circuit to the mass of the wire between the solenoid valve and the control unit. Solenoid valve may be defective (located at the rear of the gearbox on the demultiplier cylinder). Contacts in the connectors are damaged or oxidized.

 

MID144 PPID76 FMI3

Brake Signal Relay

Vehicle control unit registers the voltage of more than 6.5 V. Power cord short circuit or faulty relay.

 

MID144 PPID79 FMI3

Demultiplier blocking, solenoid valve status

Truck control unit detected a voltage of over 6.5V. Closing the wire between relay K8 and the vehicle control unit. It is possible that K8 relay is faulty (located on the central distribution board of relays and fuses in the middle of the instrument panel).

 

MID144 PPID79 FMI4

Demultiplier blocking, solenoid valve status

Vehicle Control Unit has detected a voltage of less than 2.3 V. A wire short circuit between relay K8 and the Vehicle Control Unit by mass. Breakage of the relay power cable or the wire between the relay and the vehicle control unit. K8 relay may be faulty (located on the central distribution board of the relay and fuses in the middle of the instrument panel).

 

MID144 PPID145 FMI3

Road Information System Switch Block Dynafleet.

Voltages on the switch block power supply lead are higher than 5V. The wiring is damaged or the switch Dynafleet is faulty.

 

MID144 PPID145 FMI4

Road Information System Switch Block Dynafleet.

Voltages on the switch block power supply lead are lower than 0.5V. Wiring is damaged or the switch Dynafleet is faulty.

 

MID144 PPID265 FMI3

Vehicle Speed Sensor Power Supply on the gearbox

Voltage on the power cord between the vehicle control unit and the speed sensor is above 9 V. Mass wire breakage. Closing the signal wire to a higher voltage. Speed sensor malfunction may occur.

 

MID144 PPID265 FMI4

Vehicle Speed Sensor Power Supply on the Gearbox

Voltage on the power cord between the vehicle control unit and the speed sensor is below 6.5 V. Signal or power cord breakage. Closing the signal wire by mass. Speed sensor malfunction may occur.

 

MID144 PPID279 FMI0

Dehumidifier Filter

Service life of the dehumidifier filter calculated by the vehicle control unit is over.

 

MID144 PPID302 FMI3

Heating condition of mirrors

Higher voltage short circuit or faulty relay.

 

MID144 PPID302 FMI4

Heating condition of mirrors

Wire breakage from relay or faulty relay.

 

MID144 PPID302 FMI12

Heating condition of mirrors

Relay is faulty.

 

MID144 PPID312 FMI0

Regeneration of the air dryer

Very high air flow rates due to air leaks or frequent use of equipment that requires large amounts of compressed air to operate.

 

MID144 PPID312 FM 7

Regeneration of the Air Dryer

Regeneration Valve is open for 30 s and the pressure in the pneumatic system has not changed. Damper silencer is clogged, the regeneration valve is dirty, defective and doesn't open. Wiring between the control unit and the solenoid valves in the dehumidifier is damaged. Check the fuses F10 or F6 (depending on electronic equipment version). Check the 24 V. power supply on the black wire of the solenoid valve connector of the dehumidifier.

 

MID144 PPID430 FMI0

Regeneration of the air dryer

Very high air flow rates due to air leaks or frequent use of equipment that requires large amounts of compressed air to operate.

MID144 PSID1 FMI7

Decelerator switch

VECU receives signals from SET and SET simultaneously. Signal cable is shorted to the power cable or the switch is faulty.

 

MID144 PSID2 FMI7

Spare no-load switch 2 on the accelerator pedal (only for vehicles with automatic gear change)

When the accelerator pedal is released, the control unit does not receive a signal from the no-load switch 2. Breakage of the supply or signal wire. Closing the signal wire to plus or mass. Contacts in the connectors are damaged or oxidized. It is possible that the switch integrated with the accelerator pedal is faulty.

 

MID144 PSID3 FMI7

No-load switch 3 (for vehicles with additional accelerator, with dual control)

A signal within the range of 0-13 % of the no-load switch is not fed to the vehicle control unit. Power or signal wire breakage. Closing of the signal line by plus or mass. Contacts in the connectors are damaged or oxidized. It is possible that the switch integrated with the accelerator pedal is faulty.

 

MID144 PSID4 FMI3

Decelerator switch lever

VECU detects voltage above 4.8 V. Mass wire breakage. Closing the signal wire on plus. Pins in the connectors are damaged or oxidized. Lever on the retarder switch may be defective.

 

MID144 PSID4 FMI4

Decelerator switch lever

VECU detects voltage below 0.2 V. Power or signal wire breakage. Signal wire short circuit by mass. Pins in the connectors are damaged or oxidized. Lever on the retarder switch may be defective.

 

MID144 PSID5 FMI7

Brake pedal sensor

Fault  in signal from brake pedal sensor. The contacts are damaged, oxidized or the sensor is faulty.

 

MID144 PSID7 FMI3

Speed, Threshold 2.

Abnormally high voltage is detected on the PB2 contact of the vehicle control unit. Dignal wire is short-circuited by plus. Oxidation or high resistance. Relay is faulty.

 

MID144 PSID7 FMI4

Speed, Threshold 2.

Abnormally low voltage is detected on the PB2 contact of the vehicle control unit. Signal wire is short-circuited by mass. Oxidation or high resistance. Relay is faulty.

 

MID144 PSID8 FMI2

Neutral position

VECU has detected that the requested transmission does not match the actual transmission. Neutral position sensor on the gearbox is faulty.

 

MID144 PSID8 FMI3

Neutral Position

VECU found that when the speed was reached. above 50 km/h, the neutral position hasn't changed. Mass wire break in the neutral position sensor. Closing of the signal line by plus. Oxidation or high resistance.

 

MID144 PSID8 FMI4

Neutral position

VECU found that when the speed was reached above 50 km/h, the neutral position hasn't changed. Neutral position sensor signal wire break. Signal wire short-circuited by mass. Oxidation or high resistance.

 

MID144 PSID9 FMI3

Clutch pedal sensor

VECU has detected that the position of the clutch pedal doesn't change when the speed exceeds 50 km/h. Sensor mass wire breakage. Closing the signal wire on plus. Contacts are damaged, oxidized or the sensor is faulty.

MID144 PSID9 FMI4

Clutch pedal sensor

VECU found that the position of the clutch pedal does not change when it reaches a speed above 50 km / h. Open signal wire of the neutral sensor signal. Shorting the signal wire to ground. Oxidation or high resistance.

 

MID144 PSID10 FMI3

Relay K41 Reversing Light

An abnormally high voltage has been detected on terminal PB4 of the vehicle control unit. Mass wire break. Shorting the signal wire to plus. Oxidation or high resistance.

 

MID144 PSID10 FMI4

Relay K41 Reversing Light

An abnormally low voltage has been detected on pin PA8 of the vehicle control unit. Shorting the signal wire to ground. Oxidation or high resistance.

 

MID144 PSID11 FMI3

Relay K42 Brake Signals

An abnormally high voltage has been detected on terminal PB28 of the vehicle control unit. Mass wire break. Shorting the signal wire to plus. Oxidation or high resistance.

 

MID144 PSID11 FMI4

Relay K42 Brake Signals

An abnormally low voltage has been detected on terminal PB28 of the vehicle control unit. Shorting the signal wire to ground. Oxidation or high resistance.

 

MID144 PSID14 FMI2

Datamax Fault

General failure. Switch off the ignition for at least 1 min. If the error is active, reprogram the control unit.

 

MID144 PSID19 FMI3

Parking Brake Status (K15 relay)

Abnormally high voltage has been detected on pin PB16 of the vehicle control unit. Mass wire break. Shorting the signal wire to plus. Oxidation or high resistance.

 

MID144 PSID19 FMI4

Parking Brake Status (K15 relay)

An abnormally low voltage has been detected on pin PB16 of the vehicle control unit. Shorting the signal wire to ground. Oxidation or high resistance.

 

MID144 PSID20 FMI3

PTO signal

VECU registers a high voltage or a voltage equal to the voltage of the batteries on pin PB16 from the power take-off solenoid valve. Short circuit between the solenoid valve and the control unit to a higher voltage or the solenoid valve is faulty.