Pontiac OBD/OBD2 Codes >> G5 – G6 – G8 – GTO – Montana – Solstice – Torrent (2004 – 2009)

ModelYearEngine identificationSystem
G52.2/2.4L2007-09VIN  position 8 = F/B/5GM
G6  2.4/3.5/3.9L2005-09VIN  position 8 = 1/7/8/B/NGM
G83.6/6.0L2008-09VIN  position 8 = 7/YGM
GTO  5.7/6.0L2004-07VIN  position 8  =  G/UGM
Montana SV6  3.9L2006-07VIN  position 8 = 1GM
Solstice 2.0/2.4L2006-09VIN  position 8 = B/XGM
Torrent 3.4L2006-09VIN  position 8 = FGM

General information

  • Malfunction indicator lamp (MIL) will illuminate or flash if certain faults are recorded.
  • ECM operates in backup mode if sensors fail, to enable vehicle to be driven to repair shop.

Accessing

  • Trouble codes can only be displayed by using a Scan Tool connected to the data link connector (DLC):
o G5/G6/G8 [1]
o GTO [2]
o Montana SV6/Solstice/Torrent [3]

Erasing

  • After the faults have been rectified, the manufacturer recommends that trouble codes are erased by using a Scan Tool connected to the data link connector (DLC).

Trouble code  identification

Scan codeFault locationProbable cause
PO, P2,UORefer to OBD-II trouble code tables–
P1011 [1]Intake camshaft position (CMP) actuator, bank 1 -incorrect park positionEngine oil level/pressure, mechanical fault
P1012 [1]Exhaust camshaft position (CMP) actuator, bank 1 -incorrect park positionEngine oil level/pressure, mechanical fault
P1013 [1]Intake camshaft position (CMP) actuator, bank 2 -incorrect park positionEngine oil level/pressure, mechanical fault
P1014 [1]Exhaust camshaft position (CMP) actuator, bank 2-incorrect park positionEngine oil level/pressure, mechanical fault
P1101Intake air flow -incorrectWiring, mechanical fault, engine coolant temperature (ECT) sensor, barometric pressure (BARO) sensor, intake air temperature (IAT) sensor, manifold absolute pressure (MAP) sensor, mass air flow (MAF) sensor, throttle position (TP) switch
P1106Manifold absolute pressure (MAP) sensor voltage high, intermittentWiring open circuit/short circuit to positive, poor connections
P1107Manifold absolute pressure (MAP) sensor voltage low, intermittentWiring short circuit to ground, poor connections
P1111‘Intake air temperature (IAT) sensor -voltage high,intermittentWiring open circuit/short to positive, poor connections
P1112Intake air temperature (IAT) sensor -voltage low,intermittentWiring short circuit to ground
P1114Engine coolant temperature (ECT)sensor voltage low, intermittentWiring short circuit to ground, poor connections
P1115Engine coolant temperature (ECT) sensor voltage high, intermittentWiring open circuit/short to positive, poor connections
P1121Throttle position (TP) sensor -voltage high,intermittentWiring open circuit/short to positive, poor connections
P1122Throttle position (TP) sensor -voltage low,intermittentWiring open circuit/short to ground, poor connections
P1125Accelerator pedal position (APP) sensor 1/2 –signal malfunctionWiring, APP sensor, ECM
 P1133 Heated oxygen sensor (H02S) 1, bank 1 – insufficient switching Wiring, exhaust system  leaking, H02S
P1134Heated oxygen sensor (H02S) 1, bank 1 – slow responseWiring, oxygen sensor heater, exhaust system leaking, H02S
P1153Heated oxygen sensor (H02S) 1. bank 2 – insufficient switchingWiring, oxygen sensor heater, exhaust system leaking, H02S
P1154Heated oxygen sensor (H02S) 1. bank 2 – slow responseWiring, oxygen sensor heater, exhaust system leaking, H02S
P1174Heated oxygen sensor (H02S) 1, bank 1 – mixture variation between cylindersIntake/exhaust leak/blockage, mechanical fault, ignition control, H02S
P1175Heated oxygen sensor (H02S) 1. bank 2 – mixture variation between cylindersIntake/exhaust leak/blockage, mechanical fault, ignition control, H02S
P1380Antilock brake system (ABS)/traction control system (TCS), rough road signal to ECM – malfunctionASS  trouble code(s) stored
P1381Antilock brake system (ABS)/traction control system (TCS). rough road signal to ECM – no communicationWiring, poor connections, ASS
P1400Cold  start emission control  – malfunctionIntake/exhaust leak/blockage, mechanical fault, idle speed control (ISC) system, ignition control , engine coolant temperature (ECT) sensor, H02S
P1404Exhaust gas recirculation (EGR) valve – not fully closingWiring, poor connections, EGR valve position sensor, EGR solenoid
P1516Throttle command/actual throttle position – signal variationWiring, throttle valve sticking, throttle control module
P1600Engine control module  (EeM) – malfunctionEngine control module (ECM)
P1621Engine control module (EeM) – memory performanceECM
P1627Engine control module  (EeM) – malfunctionEngine control module  (ECM)
P1640Engine control module (EeM), quad driver/output driver – circuit malfunctionWiring, ECM  controlled components, ECM
P1650Engine control module (EeM), quad driver/output driver – circuit malfunctionWiring, ECM  controlled components, ECM
P1660Engine control module (EeM), quad driver/output driver – circuit malfunctionWiring, ECM  controlled components, ECM
P1668Alternator  ‘L’  terminal  – circuit malfunctionWiring, voltage  regulator, alternator, ECM
P167AEngine control module (EeM), heated oxygen sensor (H02S) driver – internal circuit malfunctionECM
P167DEngine control module (ECM), ignition coil driver circuit malfunctionECM
P1680Engine control module  (EeM) – malfunctionEngine control module (ECM)
P1681Engine control module  (EeM) – malfunctionEngine control module  (ECM)
P1682Engine control (EC) relay/starter motor relay – voltage correlation malfunctionWiring, fuse(s), EC relay, starter motor relay, ECM
P1683Engine control module  (EeM) – malfunctionEngine control module (ECM)
P1700Transmission control module (TeM) -MIL request circuit malfunctionOBO II TCM trouble codes stored
P1719Transmission control module (TCM) -detects excessive variation between transmission input/output shaft speed sensorsTransmission fluid level, line pressure,stuck/sticking SS
P1750Torque converter clutch (Tee)solenoid/transmission shift control valve/transmission pressure control solenoid -circuit malfunctionWiring, TCC solenoid/transmission shift control valve/transmission pressure control solenoid,ECMITCM
P1779Engine control module (ECM), torque reduction signal via controller area network (CAN) data bus-out of rangeWiring, TCM, ECM
P1780Engine control module (ECM), controller areanetwork (CAN) data bus -lost communication withtransmission control module (TCM)Wiring, ECM
P1810Transmission fluid pressure (TFP) switch -manual valve positionFluid level low, wiring, selector lever linkage incorrectly adjusted, ECMITCM
P1811Shift time too long -adaptation limit reachedFluid level low, transmission mechanical fault
P1816Transmission fluid pressure (TFP) switch -invalidgear selectionWiring, selector lever linkage incorrectly adjusted, TFP switch, ECMITCM
P1818Transmission fluid pressure (TFP) switch -invalidgear selectionWiring, selector lever linkage incorrectly adjusted,TFP switch, ECMITCM
P1819Transmission range (TR) switch, signals ‘NB/C &P’ signal variationWiring, TR switch
P1820Transmission range (TR) switch, signal ‘A’ -voltage lowWiring short to ground, TR switch
P1822Transmission range (TR) switch, signal ‘B’ voltage highWiring, TR switch
P1823Transmission range (TR) switch, signal ‘P’ -voltage lowWiring short to ground, TR switch
P1825Transmission range (TR) switch, signals ‘AiB/C &P’ -incorrect signalWiring, TR switch
P1826Transmission range (TR) switch, signal ‘C’ -voltage highWiring, TR switch
P1876Manual mode selection switch -circuit malfunctionWiring, manual mode selection switch, TCM
P1877Transmission shift control switch -circuit malfunctionWiring, transmission shift control switch, ECMITCM
P1887Torque converter clutch (TCC) solenoid release switch -circuit malfunctionWiring open circuit, TCC solenoid release switch, ECMITCM
P1915Transmission range (TR) switch, signals ‘AiB/C &P’ -incorrect signal, while crankingWiring, TR switch