ECM Diagnostic Trouble Codes

IMPORTANT NOTE: Before replacing the ECM for a failed driver, control circuit or ground circuit, be sure to check the related component/circuit integrity for failures not detected due to a double fault in the circuit. Most ECM driver/control circuit failures are caused by internal failures to components (i.e. relays and solenoids) and shorted circuits (i.e. sensor pull-ups, drivers and ground circuits). These faults are difficult to detect when a double fault has occurred and only one DTC has set.

If the DRBIII® displays faults for multiple components (i.e. MAF, ECT, ENG OIL, etc.), identify and check the shared circuits for possible problems before continuing (i.e. sensor grounds or 5-volt supply circuits). Refer to the appropriate wiring diagrams to identify shared circuits.

mass air flow sensor - signal voltage too low

mass air flow sensor - signal voltage too high

mass air flow sensor - supply voltage too high or low

mass air flow sensor - plausibility #1

mass air flow sensor - plausibility #2

mass air flow sensor - plausibility #3

mass air flow sensor - plausibility #4

boost pressure sensor - signal voltage too low

boost pressure sensor - signal voltage too high

boost pressure sensor - supply voltage too high or low

boost pressure sensor - plausibility

intake air temperature sensor circuit - signal voltage too low

intake air temperature sensor circuit - signal voltage too high

engine coolant temperature sensor circuit - signal voltage too low

engine coolant temperature sensor circuit - signal voltage too high

engine coolant temperature sensor circuit - engine is cold too long

fuel temperature sensor circuit - signal voltage too low

fuel temperature sensor circuit - signal voltage too high

fuel pressure sensor circuit malfunction - signal voltage too low

fuel pressure sensor circuit malfunction - signal voltage too high

fuel pressure sensor circuit malfunction - supply voltage too high or low

fuel pressure sensor circuit malfunction - plausibility

cylinder 1 injector circuit - current decrease

cylinder 1 injector circuit - load drop

cylinder 1 injector circuit - overcurrent high side

cylinder 1 injector circuit - overcurrent low side

cylinder 2 injector circuit - current decrease

cylinder 2 injector circuit - load drop

cylinder 2 injector circuit - overcurrent high side

cylinder 2 injector circuit - overcurrent low side

cylinder 3 injector circuit - current decrease

cylinder 3 injector circuit - load drop

cylinder 3 injector circuit - overcurrent high side

cylinder 3 injector circuit - overcurrent low side

cylinder 4 injector circuit - current decrease

cylinder 4 injector circuit - load drop

cylinder 4 injector circuit - overcurrent high side

cylinder 4 injector circuit - overcurrent low side

cylinder 5 injector circuit - current decrease

cylinder 5 injector circuit - load drop

cylinder 5 injector circuit - overcurrent high side

cylinder 5 injector circuit - overcurrent low side

vehicle speed sensor - plausibility #1

vehicle speed sensor - signal voltage too high

vehicle speed sensor - plausibility #2

vehicle speed sensor - frequency too high

can data bus - bus failure

can data bus - transmission error #1

can data bus - transmission error #2

can data bus - hardware failure

brake switch signal circuits - incorrect can message brake switch signal circuits - plausibility with redundant contact

brake switch signal circuits - plausibility after initialization

atmospheric pressure sensor circuit - signal voltage too low

atmospheric pressure sensor circuit - signal voltage too high

fuel pressure malfunction - pressure too high

fuel pressure malfunction - pressure too low

fuel pressure malfunction - solenoid open

fuel pressure malfunction - actuator sticking

fuel pressure malfunction - leakage detected

fuel pressure malfunction - positive deviation at engine speed too high

fuel shutdown solenoid - short circuit

fuel shutdown solenoid - open circuit

fuel pressure solenoid - short circuit

fuel pressure solenoid - open circuit

fuel pressure solenoid - plausibility

engine oil sensor - synchronization error #1

engine oil sensor - open or shorted to ground

engine oil sensor - supply voltage too high or too low

engine oil sensor - timing error

engine oil sensor - oil level plausibility

engine oil sensor - oil quality plausibility

engine oil sensor - water contamination

can message - ABS message error

can message - TCM message error

accel pedal position sensor 1 circuit - signal voltage too low

accel pedal position sensor 1 circuit - signal voltage too high

accel pedal position sensor 1 circuit - supply voltage too high or low

accel pedal position sensor 1 circuit - plausibility #1

accel pedal position sensor 1 circuit - plausibility #2

accel pedal position sensor 1 circuit - plausibility #3

accel pedal position sensor 2 circuit - signal voltage too low

accel pedal position sensor 2 circuit - signal voltage too high

accel pedal position sensor 2 circuit - supply voltage too high or low

accel pedal position sensor 2 circuit - implausibility potentiometer 1 and 2

starter relay circuit - short circuit

starter relay circuit - open circuit

starter relay circuit - incorrect start

crankshaft position sensor circuit - plausibility #1

crankshaft position sensor circuit - overspeed recognition

crankshaft position sensor circuit - plausibility #2

CMP/CKP position sensor circuit - fuel shut-off activated

CMP/CKP position sensor circuit - signal frequency too high

CMP/CKP position sensor circuit - CKP dynamic plausibility

CMP/CKP position sensor circuit - CMP/CKP sync failure

CMP/CKP position sensor circuit - CMP dynamic plausibility

CMP/CKP position sensor circuit - correction for main injection delayed

EGR solenoid circuit - short circuit

EGR solenoid circuit - open circuit

EGR solenoid circuit - positive deviation

EGR solenoid circuit - negative deviation

EGR solenoid circuit - improper flow

boost pressure solenoid - short to voltage

boost pressure solenoid - open or shorted to ground

boost pressure solenoid - positive deviation

boost pressure solenoid - negative deviation

boost pressure wastegate solenoid - plausibility

glow plug failure - cylinder 1

glow plug failure - cylinder 2

glow plug failure - cylinder 3

glow plug failure - cylinder 4

glow plug failure - cylinder 5

glow plug module - communication fault

glow plug module - internal fault

glow plug module - excess current

glow plug module - short circuit

glow plug module - incorrect diagnostic sequence

glow plug module - incorrect reception message

maximum vehicle speed limit - negative deviation

speed control - negative acceleration deviation

speed control - positive acceleration deviation

speed control - switch signal plausibility

speed control - can message plausibility

speed control - switch signal out of range

engine control relay control circuit - shuts off too early

engine control relay control circuit - shuts off too late

sensor reference voltage A circuit - voltage too low

sensor reference voltage A circuit - voltage too high

ignition voltage - voltage error

ECM - lower stabilization limit

ECM - upper stabilization limit

ECM - recovery error

ECM - shut-off monitoring

ECM - quantity stop

ECM - communication #1

ECM - voltage supply is too low

ECM - voltage supply is too high

ECM - EEPROM adaption value

ECM - sprintshift is coded as manual transmission

ECM - manual transmission is coded as sprintshift

ECM - EEPROM communication

ECM - can bus open during version coding

ECM - version number missing

ECM - codeword is missing or incorrect

immobilizer - message missing

immobilizer - incorrect message

immobilizer - no error in ECM EEPROM test

capacitor voltage 1 - readout too small

capacitor voltage 1 - readout too large

capacitor voltage 1 - voltage too high

capacitor voltage 1 - voltage too low

capacitor voltage 1 - calculated voltage is incorrect

fuel pressure solenoid - open circuit

fuel pressure solenoid - short circuit

after run shut off error - zero quantity

after run shut off error - injection powerstage ACM circuit fault

a/c compressor shut-off circuit - short circuit

a/c compressor shut-off circuit - open circuit

a/c compressor shut-off circuit - can data error

low side fuel pressure sensor circuit - signal voltage is too low

low side fuel pressure sensor circuit - signal voltage is too high

low side fuel pressure sensor circuit - plausibility

fuel delivery - pressure too low

fuel delivery - plausibility

fuel delivery - minimum pressure not reached

fuel delivery - fuel filter restriction

fuel pressure - measurement is too low

fuel pressure - measurement is too high

water level sensor - water in fuel

instrument cluster - can error

instrument cluster - glow lamp fault

torque reduction message from ABS - no communication

torque reduction message from ABS - can plausibility

torque reduction message from ABS - message error

torque reduction message from ABS - message missing

torque reduction message from ABS - plausibility #1

torque reduction message from ABS - plausibility #2

torque reduction message from TCM - TCM DTC #1

torque reduction message from TCM - TCM DTC #2

torque reduction message from TCM - can plausibility

torque reduction message from TCM - message error

torque reduction message from TCM - messages missing

torque reduction message from TCM - plausibility

torque reduction message from TCM - engine stop

reference voltage B - voltage is too low

reference voltage B - voltage is too high

a/d converter error internal failure

a/d converter error APP sensor ground failure

a/d converter error voltage failure

capacitor #1 - voltage error

capacitor #2 - voltage error