Pontiac G5 – G6 – G8 – GTO – Montana – Solstice – Torrent (2004 – 2009) Trouble Code Info

Model Year Engine identification System
G52.2/2.4L 2007-09 VIN  position 8 = F/B/5 GM
G6  2.4/3.5/3.9L 2005-09 VIN  position 8 = 1/7/8/B/N GM
G83.6/6.0L 2008-09 VIN  position 8 = 7/Y GM
GTO  5.7/6.0L 2004-07 VIN  position 8  =  G/U GM
Montana SV6  3.9L 2006-07 VIN  position 8 = 1 GM
Solstice 2.0/2.4L 2006-09 VIN  position 8 = B/X GM
Torrent 3.4L 2006-09 VIN  position 8 = F GM

General information

  • Refer to the front of this manual for general test conditions, terminology, detailed descriptions of wiring faults and a general trouble shooter for electrical and mechanical faults.
  • 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.
G51G52

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]
G53

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 code Fault location Probable cause
PO, P2,UO Refer to OBD-II trouble code tables
P1011 [1] Intake camshaft position (CMP) actuator, bank 1 -incorrect park position Engine oil level/pressure, mechanical fault
P1012 [1] Exhaust camshaft position (CMP) actuator, bank 1 -incorrect park position Engine oil level/pressure, mechanical fault
P1013 [1] Intake camshaft position (CMP) actuator, bank 2 -incorrect park position Engine oil level/pressure, mechanical fault
P1014 [1] Exhaust camshaft position (CMP) actuator, bank 2-incorrect park position Engine oil level/pressure, mechanical fault
P1101 Intake air flow -incorrect Wiring, 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
P1106 Manifold absolute pressure (MAP) sensor voltage high, intermittent Wiring open circuit/short circuit to positive, poor connections
P1107 Manifold absolute pressure (MAP) sensor voltage low, intermittent Wiring short circuit to ground, poor connections
P1111 ‘Intake air temperature (IAT) sensor -voltage high,intermittent Wiring open circuit/short to positive, poor connections
P1112 Intake air temperature (IAT) sensor -voltage low,intermittent Wiring short circuit to ground
P1114 Engine coolant temperature (ECT)sensor voltage low, intermittent Wiring short circuit to ground, poor connections
P1115 Engine coolant temperature (ECT) sensor voltage high, intermittent Wiring open circuit/short to positive, poor connections
P1121 Throttle position (TP) sensor -voltage high,intermittent Wiring open circuit/short to positive, poor connections
P1122 Throttle position (TP) sensor -voltage low,intermittent Wiring open circuit/short to ground, poor connections
P1125 Accelerator pedal position (APP) sensor 1/2 –signal malfunction Wiring, APP sensor, ECM
 P1133  Heated oxygen sensor (H02S) 1, bank 1 – insufficient switching  Wiring, exhaust system  leaking, H02S
P1134 Heated oxygen sensor (H02S) 1, bank 1 – slow response Wiring, oxygen sensor heater, exhaust system leaking, H02S
P1153 Heated oxygen sensor (H02S) 1. bank 2 – insufficient switching Wiring, oxygen sensor heater, exhaust system leaking, H02S
P1154 Heated oxygen sensor (H02S) 1. bank 2 – slow response Wiring, oxygen sensor heater, exhaust system leaking, H02S
P1174 Heated oxygen sensor (H02S) 1, bank 1 – mixture variation between cylinders Intake/exhaust leak/blockage, mechanical fault, ignition control, H02S
P1175 Heated oxygen sensor (H02S) 1. bank 2 – mixture variation between cylinders Intake/exhaust leak/blockage, mechanical fault, ignition control, H02S
P1380 Antilock brake system (ABS)/traction control system (TCS), rough road signal to ECM – malfunction ASS  trouble code(s) stored
P1381 Antilock brake system (ABS)/traction control system (TCS). rough road signal to ECM – no communication Wiring, poor connections, ASS
P1400 Cold  start emission control  – malfunction Intake/exhaust leak/blockage, mechanical fault, idle speed control (ISC) system, ignition control , engine coolant temperature (ECT) sensor, H02S
P1404 Exhaust gas recirculation (EGR) valve – not fully closing Wiring, poor connections, EGR valve position sensor, EGR solenoid
P1516 Throttle command/actual throttle position – signal variation Wiring, throttle valve sticking, throttle control module
P1600 Engine control module  (EeM) – malfunction Engine control module (ECM)
P1621 Engine control module (EeM) – memory performance ECM
P1627 Engine control module  (EeM) – malfunction Engine control module  (ECM)
P1640 Engine control module (EeM), quad driver/output driver – circuit malfunction Wiring, ECM  controlled components, ECM
P1650 Engine control module (EeM), quad driver/output driver – circuit malfunction Wiring, ECM  controlled components, ECM
P1660 Engine control module (EeM), quad driver/output driver – circuit malfunction Wiring, ECM  controlled components, ECM
P1668 Alternator  ‘L’  terminal  – circuit malfunction Wiring, voltage  regulator, alternator, ECM
P167A Engine control module (EeM), heated oxygen sensor (H02S) driver – internal circuit malfunction ECM
P167D Engine control module (ECM), ignition coil driver circuit malfunction ECM
P1680 Engine control module  (EeM) – malfunction Engine control module (ECM)
P1681 Engine control module  (EeM) – malfunction Engine control module  (ECM)
P1682 Engine control (EC) relay/starter motor relay – voltage correlation malfunction Wiring, fuse(s), EC relay, starter motor relay, ECM
P1683 Engine control module  (EeM) – malfunction Engine control module (ECM)
P1700 Transmission control module (TeM) -MIL request circuit malfunction OBO II TCM trouble codes stored
P1719 Transmission control module (TCM) -detects excessive variation between transmission input/output shaft speed sensors Transmission fluid level, line pressure,stuck/sticking SS
P1750 Torque converter clutch (Tee)solenoid/transmission shift control valve/transmission pressure control solenoid -circuit malfunction Wiring, TCC solenoid/transmission shift control valve/transmission pressure control solenoid,ECMITCM
P1779 Engine control module (ECM), torque reduction signal via controller area network (CAN) data bus-out of range Wiring, TCM, ECM
P1780 Engine control module (ECM), controller areanetwork (CAN) data bus -lost communication withtransmission control module (TCM) Wiring, ECM
P1810 Transmission fluid pressure (TFP) switch -manual valve position Fluid level low, wiring, selector lever linkage incorrectly adjusted, ECMITCM
P1811 Shift time too long -adaptation limit reached Fluid level low, transmission mechanical fault
P1816 Transmission fluid pressure (TFP) switch -invalidgear selection Wiring, selector lever linkage incorrectly adjusted, TFP switch, ECMITCM
P1818 Transmission fluid pressure (TFP) switch -invalidgear selection Wiring, selector lever linkage incorrectly adjusted,TFP switch, ECMITCM
P1819 Transmission range (TR) switch, signals ‘NB/C &P’ signal variation Wiring, TR switch
P1820 Transmission range (TR) switch, signal ‘A’ -voltage low Wiring short to ground, TR switch
P1822 Transmission range (TR) switch, signal ‘B’ voltage high Wiring, TR switch
P1823 Transmission range (TR) switch, signal ‘P’ -voltage low Wiring short to ground, TR switch
P1825 Transmission range (TR) switch, signals ‘AiB/C &P’ -incorrect signal Wiring, TR switch
P1826 Transmission range (TR) switch, signal ‘C’ -voltage high Wiring, TR switch
P1876 Manual mode selection switch -circuit malfunction Wiring, manual mode selection switch, TCM
P1877 Transmission shift control switch -circuit malfunction Wiring, transmission shift control switch, ECMITCM
P1887 Torque converter clutch (TCC) solenoid release switch -circuit malfunction Wiring open circuit, TCC solenoid release switch, ECMITCM
P1915 Transmission range (TR) switch, signals ‘AiB/C &P’ -incorrect signal, while cranking Wiring, TR switch