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P0341 C*
R Camshaft Position Sensor A Circuit
Range/Performance (Bank 1 or single sensor)
P0381 C* O
Glow Plug/Heater Indicator Circuit
P0401 C*
Exhaust Gas Recirculation Flow Insufficient Detected EGR Valve Position does not match desired, limits based on
P0402 C*
Exhaust Gas Recirculation Flow Excessive Detected EGR Valve Position does not match desired, limits based on
P0403 C* O R Exhaust Gas Recirculation Control Circuit
P0404 C*
Exhaust Gas Recirculation Control Circuit
Range/Performance
P0405 C* O R Exhaust Gas Recirculation Sensor A Circuit Low
P0406 C* O R Exhaust Gas Recirculation Sensor A Circuit High
P0460 C O R Fuel Level Sensor Circuit
P0470
O
Exhaust Pressure Sensor
P0471 C*
Exhaust Pressure Sensor Range/Performance
P0472 C* O R Exhaust Pressure Sensor Low Input
P0473 C* O R Exhaust Pressure Sensor High Input
P0478 C*
Exhaust Pressure Control Valve High Input
P0480 C
R Fan 1 Control Circuit
P0500 C
Vehicle Speed Sensor A
P0562 C* O R System Voltage Low
P0563 C O R System Voltage High
P0565 C O R Cruise Control ON Signal
P0566 C O R Cruise Control OFF Signal
P0567
O
Cruise Control RESUME Signal
P0568
O
Cruise Control SET Signal
P0569
O
Cruise Control COAST Signal
P0571
O
Brake Switch A Circuit
P0602 C O R Powertrain Control Module Programming Error
P0603 C
Powertrain Control Module Keep Alive Memory (KAM)
Error
P0605
O
Powertrain Control Module Read Only Memory
(ROM) Error
P0615 C O R Starter Relay Circuit
P0620 C O R Generator 1 Control Circuit
P0623 C O R Generator Lamp Control Circuit
P0645 C O R A/C Clutch Relay Control Circuit
P0649 C O R Cruise Control Lamp Control Circuit
P0670 C* O R Glow Plug Module Control Circuit
P0671 C* O R Cylinder 1 Glow Plug Circuit
P0672 C* O R Cylinder 2 Glow Plug Circuit
P0673 C* O R Cylinder 3 Glow Plug Circuit
P0674 C* O R Cylinder 4 Glow Plug Circuit
P0675 C* O R Cylinder 5 Glow Plug Circuit
P0676 C* O R Cylinder 6 Glow Plug Circuit
P0677 C* O R Cylinder 7 Glow Plug Circuit
P0678 C* O R Cylinder 8 Glow Plug Circuit
P0683 C* O R Glow Plug Control Module to PCM Communication
Circuit
P0684 C* O R Glow Plug Control Module to PCM Communication
Circuit Range/Performance
P0700 C O R Transmission Control System (MIL Request)
P0703
R Brake Switch B Input Circuit
P0704 C
R Clutch Switch Input Circuit
P1000 C O R OBD Systems Readiness Test Not Complete
P1001
R KOER not able to complete, KOER aborted
P1139 C O R Water in Fuel Indicator Circuit
P1148 C* O R Generator 2 Control Circuit
P1149 C O R Generator 2 Control Circuit High
P1184
R Engine Oil Temperature Sensor Out Of Self Test
Range
P1260 C
Theft Detected, Vehicle Immobilized
P1284
R Aborted KOER - Injector Control Pressure Regulator ICP failure--Aborts KOER CCT test
P1378 C O R FICM Supply Voltage Circuit Low
P1379 C O R FICM Supply Voltage Circuit High
P1397
R System Voltage Out Of Self Test Range
P1408
R Exhaust Gas Recirculation Flow Out Of Self Test
D I A G N O S T I C C O D E S
CMP signal intermittent.
Indicator Circuit Check - Instrument cluster driver checks for
open circuit, or short circuit when lamp turns on and off.
engine speed / load.
engine speed / load.
EGR actuator circuit check. Diagnostic circuit associated
with 1 Amp driver Internal to PCM.
+/- 0.10 EGRP error from commanded to actual EGRP
during normal driving conditions.
EGR is disabled when EGR voltage is less than 0.30 volts.
EGR is disabled when EGR voltage is greater than 4.9 volts. EGRP circuit short to Vref or Vbat, defective sensor.
Fuel Level Indicator (FLI) Circuit Check - Instrument cluster
driver checks for open circuit, or short circuit.
Maximum EP when the engine is not running 150 kpa (21.8
PSI) absolute.
Minimum EP when the engine is running, Pressure
difference of +/-10 kPa (1.5 PSI) from desired.
EGR disabled, default inferred for VGT operation when EGR
voltage is less than 0.03 volts.
EGR disabled, default inferred for VGT operation when EGR
voltage is greater than 4.8 volts.
EP is higher than EP desired by 260 kpa (37.7 PSI) for
greater than 30 seconds.
Vehicle speed sensor malfunction.
PCM voltage less than 7v - cause of no start/misfire.
PCM voltage continuously more than 23.3v.
KOER switch test(code set if cruise not present).
KOER switch test(code set if cruise not present).
KOER switch test(code set if cruise not present).
KOER switch test(code set if cruise not present).
KOER switch test(code set if cruise not present).
Brake switch A circuit malfunction
No historical faults output during self test.
PCM failure
Glow plug control module control line failure
Glow plug #1 failure
Glow plug #2 failure
Glow plug #3 failure
Glow plug #4 failure
Glow plug #5 failure
Glow plug #6 failure
Glow plug #7 failure
Glow plug #8 failure
GPCM glow plug control module communication line failure
Nosie was detected in the GPCM communication line
KOER switch test.
KOER switch test.
Drive cycle is not complete.
Conditions not met.
Indicates falt in circuit.
Engine not warm enough to run KOEO CCT - aborts test.
IDM detects logic power low, less than 7 volts.
IDM detects excessive voltage, greater than 16 volts.
EGRC output circuit check - engine off test only
Poor connection, defective sensor, electrical noise.
Open/Short circuit, lamp, fuse, PCM.
EGR Valve stuck or sticking - EGR Valve Position Sensor Bias - EP
Sensor bias.
EGR Valve stuck or sticking - EGR Valve Position Sensor Bias - EP
Sensor bias.
Open circuit, short to ground, and short to power.
Faulty EGR sensor, valve or PCM integrity of EGR position circuit.
EGRP circuit short to ground or open, defective sensor.
"REFER to the appropriate section in the Workshop Manual."
Faulty EP Sensor, PCM.
Faulty EP Sensor, PCM or VGT.
EP circuit is short to ground or open, defective sensor.
EP circuit is short to Vref or Vbat, defective sensor.
Faulty EP sensor, VGT control valve slow to respond, Stuck VGT
valve, faulty PCM.
Sensor, circuit, PSM, PSOM, low transmission fluid.
Low Vbat, loose connections/resistance in circuit, Vref engine
concerns.
Charging system fault.
Open or short circuit, switch failure, PCM failure or failed to activate
switch during KOER switch test. (code will set if cruise is not present
Cruise control code will be set on every switch test on vevicles not
equipped with cruise control
Disconnected/Discharged Battery, Open PCM pin, faulty PCM.
Defective PCM.
Open/grounded circuit, open/shorted GPCM, failed PCM
Open/shorted circuit, faulty glow plug, failed GPCM
Open/shorted circuit, faulty glow plug, failed GPCM
Open/shorted circuit, faulty glow plug, failed GPCM
Open/shorted circuit, faulty glow plug, failed GPCM
Open/shorted circuit, faulty glow plug, failed GPCM
Open/shorted circuit, faulty glow plug, failed GPCM
Open/shorted circuit, faulty glow plug, failed GPCM
Open/shorted circuit, faulty glow plug, failed GPCM
Open/shorted circuit, failed GPCM, failed PCM
Noise in GPD line
Open/short circuit, switch, PCM, failed to activate during KOER switc
test.
Open/short circuit, switch, PCM, failed to activate during KOER switc
test.
A/C, Parking Brake, Clutch, PRNDL, (EOT, ETC.)
Faulty sensor, Open or Short in circuit.
Engine not warm enough, leaking themostat, circuit failure.
See codes P2284, P2285, P2286, P2288, P2623
Low batteries, loose connections/resistance in circuit, defective relay
Charging system fault.
Voltage too high or low for glow plug monitor test
EGR Control circuit open, short to Vref, Vbat, ground, defective coil.
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