G2: FAQ: Error Codes And Definitions

This is a list of all the error codes that can be stored in the ECU and DPMS unit. Click on the description for more specific information on that code, troubleshooting/diagnosis, and possible solutions.

CEL Codes

Code	Definition
0	Engine Control Module (ECM, ECU, PCM)
1	Left Heated Oxygen Sensor (HO2S)
2	Right Heated Oxygen Sensor (HO2S)
3	Manifold Absolute Pressure (MAP Sensor)
4	Crankshaft Position 1 (CKP Sensor)
5	Manifold Absolute Pressure (MAP Sensor)
6	Engine Coolant Temperature (ECT Sensor)
7	Throttle Position (TP Sensor, TPS)
9	No. 1 Cylinder Position (CYP Sensor)
10	Intake Air Temperature (IAT Sensor)
12	Exhaust Gas Recirculation (EGR Valve Life Sensor)
13	Barometric Pressure (Baro Sensor)
14	Idle Air Control (IAC Valve)
15	Ignition Output Signal
16	Fuel Injector
17	Vehicle Speed Sensor (VSS)
18	Ignition Timing Adjustment
23	Left Knock Sensor
35	TC STB Sensor
36	TC FC Sensor
41	Left Heated Oxygen Sensor Heater
42	Right Heated Oxygen Sensor Heater
43	Left Fuel Supply System
44	Right Fuel Supply System
45	Left Fuel Metering
46	Right Fuel Metering
53	Right Knock Sensor
54	Crankshaft Position 2 (CKP Sensor)
59	No. 1 Cylinder Position 2 (CYP Sensor)

ABS Codes

Main Code	Sub Code	Definition
1	None	ABS Pump Motor Over-Run
	2	ABS Pump Motor Circuit Problem
	3	High Pressure Leakage
	4	Pressure Switch
	8	Accumulator Gas Leakage
2	1	Parking Brake Switch-Related Problem
3	1	Front Right Pulser
	2	Front Left Pulser
	4	Rear Right/Left Pulser
4	1	Front Right Wheel Sensor
	2	Front Left Wheel Sensor
	4	Rear Right Wheel Sensor
	8	Rear Left Wheel Sensor
5	None	Rear Right/Left Wheel Sensors
	4	Rear Right Wheel Sensor
	8	Rear Left Wheel Sensor
6	None	Front/Rear Fail-Safe Relays
	1	Front Fail-Safe Relay
	4	Rear Fail-Safe Relay
7	1	Front Right Solenoid Related Problem
	2	Front Left Solenoid Related Problem
	4	Rear Right/Left Solenoid Related Problem

TCS Codes

Main Code	Sub Code	Definition
1	2	TCS Control Unit
2	None	Parking Brake
	1	Steering Angle Sensor
	3	Lg Sensor
3	1	PGM-FI System
	2	Engine Speed (NEP) Signal
	4	Abnormal Reference Voltage (VREF) Signal
	5	Abnormal Barometric Pressure (BARO) Sensor Signal
	6	Abnormal Throttle Position Sensor (TPS) Signal
	7	Abnormal TCS Control Valve Angle Sensor Signal
4	1	Right Front Wheel Sensor
	2	Left Front Wheel Sensor
	4	Right Rear Wheel Sensor
	8	Left Rear Wheel Sensor
	9	All Wheel Sensors
5	1	Abnormal Fail-Safe Relay, TCS Control Valve Actuator, Or TCS Control Valve Assembly
	2	TCS Control Valve Actuator Voltage Low
	3	Abnormal Back-Up Voltage
6	1	Powertrain Control Module

D4 Codes

Code	Definition
1	Lock-Up Control Solenoid Valve A
2	Lock-Up Control Solenoid Valve B
3	Throttle Position Sensor (TPS)
4	Vehicle Speed Sensor (VSS)
5	AT Gear Position Switch
6	AT Gear Position Switch
7	Shift Control Solenoid Valve A
8	Shift Control Solenoid Valve B
9	Countershaft Speed Sensor
10	Engine Coolant Temperature Sensor (ECT)
11	ECM
14	ECM
15	Mainshaft Speed Sensor
16	Linear Solenoid
17	Kick-Down Switch

DPMS Codes

Code	Definition
1	Slide Switch
2	Recline Switch
3	Front Up-Down Switch
4	Rear Up-Down Switch
5	Tilt Switch
6	Extend-Retract Switch
11	Slide Switch or Relay
12	Recline Switch or Relay
13	Front Up-Down Switch or Relay
14	Rear Up-Down Switch or Relay
15	Tilt Switch or Relay
16	Extend-Retract Switch or Relay
21	MEMO Button
22	Position Button 1
23	Position Button 2
24	Forward Slide Switch
25	Backward Slide Switch
26	Forward Recline Switch
27	Backward Recline Switch
28	Front Up Switch
29	Front Down Switch
30	Rear Up Switch
31	Rear Down Switch
32	Tilt Up Switch
33	Tilt Down Switch
34	Extend Switch
35	Retract Switch
36	Ignition Switch

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