Land Rover DTC P1187 – Oxygen Sensor Heater Circuit Short Upstream
DTC P1187 meaning on Land Rover
The DTC P1187 on a Land Rover indicates a fault with the Oxygen Sensor Heater Circuit Short Upstream. This means that there is a problem with the heating element in the upstream oxygen sensor, which is responsible for monitoring the oxygen levels in the exhaust gases.
Land Rover DTC P1187 symptoms
Some common symptoms associated with DTC P1187 on a Land Rover may include:
- Check Engine Light illuminated on the dashboard
- Poor fuel economy
- Engine running rough or misfiring
- Reduced engine performance
Land Rover DTC P1187 causes
The potential causes of DTC P1187 on a Land Rover may include:
- Faulty oxygen sensor heater circuit
- Short circuit in the wiring of the oxygen sensor heater
- Corrosion or damage to the oxygen sensor connector
Land Rover DTC P1187 seriousness
While the vehicle may still be operable with DTC P1187, it is important to address this issue promptly to prevent potential damage to the engine and ensure optimal fuel efficiency.
How to diagnose DTC P1187 on Land Rover
To diagnose DTC P1187 on a Land Rover, a mechanic would typically perform the following steps:
- Use a diagnostic scanner to retrieve the fault code
- Inspect the wiring and connectors of the upstream oxygen sensor
- Test the oxygen sensor heater circuit for continuity and resistance
- Check for any signs of damage or corrosion
How to fix DTC P1187 on Land Rover
To fix DTC P1187 on a Land Rover, the following steps may be taken:
- Replace the upstream oxygen sensor if the heater circuit is faulty
- Repair any short circuits in the wiring of the oxygen sensor heater
- Clean or replace the oxygen sensor connector if damaged
- Clear the fault code and reset the Check Engine Light
How to erase DTC P1187 on Land Rover
To erase DTC P1187 on a Land Rover, the fault code can be cleared using a diagnostic scanner. Once the underlying issue has been addressed and fixed, the code can be cleared to reset the Check Engine Light.
Recommended tools for Land Rover diagnostics
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