What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer communications
2Original wording in English
CHEVROLET, GMC
Reported code forms P0161
4.8 5.3 LM4 LM7 LR4 ENGINE - WITH O2 SENSOR CODES P0135, P0141, P0155, P0161. SIT BULLETIN 1452753. *TT
CHEVROLET, GMC
Reported code forms P0161
INCORRECT O2 SENSORS AND WIRING HARNESS CAUSING HO2 SENSOR HEATER CIRCUIT CODES P0135 P0141 P0155 P0161. *TT
Check vehicle applicability
1A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| GMC | SIERRA | 2004 |
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.