P1157 – Land Rover DTC

Land Rover DTC P1157 – Oxygen Sensor Engine Lean *Codes* B D

DTC P1157 meaning on Land Rover

The DTC P1157 on a Land Rover indicates an issue with the oxygen sensor in bank 2, sensor 1, reporting a lean air-fuel mixture condition.

Land Rover DTC P1157 symptoms

Common symptoms associated with DTC P1157 on a Land Rover may include:

• Check Engine Light illuminated
• Decreased fuel efficiency
• Engine running rough or misfiring
• Reduced engine performance

Land Rover DTC P1157 causes

The potential causes of DTC P1157 on a Land Rover can include:

• Faulty oxygen sensor
• Vacuum leaks in the intake system
• Fuel delivery issues
• Exhaust system leaks

Land Rover DTC P1157 seriousness

While DTC P1157 may not cause immediate drivability issues, it can lead to decreased fuel efficiency and potential long-term engine damage if left unresolved.

How to diagnose DTC P1157 on Land Rover

To diagnose DTC P1157 on a Land Rover, a mechanic may perform the following steps:

1. Use a scan tool to retrieve the fault code and freeze frame data
2. Inspect the oxygen sensor for proper operation
3. Check for vacuum leaks in the intake system
4. Inspect the exhaust system for leaks

How to fix DTC P1157 on Land Rover

To fix DTC P1157 on a Land Rover, the following steps may be taken:

1. Replace the faulty oxygen sensor
2. Repair any vacuum leaks in the intake system
3. Address any fuel delivery issues
4. Fix any exhaust system leaks

How to erase DTC P1157 on Land Rover

To erase DTC P1157 on a Land Rover, the fault code can be cleared using a scan tool. After the repair has been completed, the code can be cleared to reset the Check Engine Light.