Land Rover DTC P1188 – Oxygen Sensor Heater High Resistance Upstream
DTC P1188 meaning on Land Rover
DTC P1188 on a Land Rover indicates a problem with the upstream oxygen sensor heater circuit having high resistance. This fault code is specific to the oxygen sensor located before the catalytic converter.
Land Rover DTC P1188 symptoms
Symptoms of DTC P1188 on a Land Rover may include:
- Check Engine Light illuminated
- Poor fuel economy
- Engine running rough
- Reduced engine performance
Land Rover DTC P1188 causes
Common causes of DTC P1188 on a Land Rover include:
- Failed oxygen sensor heater
- Wiring or connector issues in the oxygen sensor circuit
- Faulty engine control module (ECM)
Land Rover DTC P1188 seriousness
DTC P1188 should not be ignored as it can lead to poor engine performance and increased emissions. It is recommended to address this issue promptly to prevent further damage to the vehicle.
How to diagnose DTC P1188 on Land Rover
To diagnose DTC P1188 on a Land Rover, follow these steps:
- Use an OBD-II scanner to retrieve the fault code and freeze frame data.
- Inspect the wiring and connectors in the oxygen sensor heater circuit for any damage or corrosion.
- Test the oxygen sensor heater for proper resistance using a multimeter.
- Check the ECM for any stored codes related to the oxygen sensor heater circuit.
How to fix DTC P1188 on Land Rover
To fix DTC P1188 on a Land Rover, consider the following:
- Replace the upstream oxygen sensor if the heater is faulty.
- Repair any damaged wiring or connectors in the oxygen sensor circuit.
- If the ECM is determined to be faulty, it may need to be replaced or reprogrammed.
How to erase DTC P1188 on Land Rover
To erase DTC P1188 on a Land Rover, you can use an OBD-II scanner to clear the fault code after the underlying issue has been addressed. This will reset the Check Engine Light and allow you to monitor the system for any recurring faults.