P1171 – Land Rover DTC

Land Rover DTC P1171 – Oxygen Sensor System Too Lean Fault Banks A & B

DTC P1171 meaning on Land Rover

DTC P1171 on a Land Rover indicates an Oxygen Sensor System Too Lean Fault in Banks A & B. This fault code is triggered when the Engine Control Module (ECM) detects that the air-fuel mixture is too lean in both bank A and bank B of the engine.

Land Rover DTC P1171 symptoms

Symptoms of DTC P1171 on a Land Rover may include:

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

Land Rover DTC P1171 causes

Common causes of DTC P1171 on a Land Rover include:

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

Land Rover DTC P1171 seriousness

DTC P1171 should not be ignored as it can lead to poor engine performance, reduced fuel efficiency, and potential damage to the catalytic converter over time if left unresolved.

How to diagnose DTC P1171 on Land Rover

To diagnose DTC P1171 on a Land Rover, a mechanic may perform the following steps:

1. Scan the vehicle’s ECM for fault codes
2. Inspect the oxygen sensors for proper operation
3. Check for vacuum leaks in the intake system
4. Test fuel delivery system for proper function

How to fix DTC P1171 on Land Rover

To fix DTC P1171 on a Land Rover, the following steps may be taken:

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

How to erase DTC P1171 on Land Rover

To erase DTC P1171 on a Land Rover, the fault code can be cleared using a diagnostic scan tool. After the necessary repairs have been made, the code can be cleared to reset the Check Engine Light.