P1186 GMC Code - Engine Oil Temperature Sensor Circuit Performance
Quick Answer
The P1186 GMC code indicates a problem with the engine oil temperature sensor circuit's performance. Common causes include Faulty engine oil temperature sensor, Wiring or connector issues in the engine oil temperature sensor circuit, Corrosion or damage to the sensor wiring harness. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1186 GMC indicates Engine Oil Temperature Sensor Circuit Performance.
- Common causes
- Common causes include Faulty engine oil temperature sensor, Wiring or connector issues in the engine oil temperature sensor circuit, Corrosion or damage to the sensor wiring harness.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P1186 GMC Description
The P1186 GMC code indicates a problem with the engine oil temperature sensor circuit's performance. The engine oil temperature sensor plays a crucial role in monitoring the temperature of the engine oil. This data is essential for the engine's proper functioning, as it helps ensure that the oil is at the optimal temperature for lubrication and cooling purposes. When the engine oil temperature sensor circuit is not performing as expected, it can lead to various issues that can affect the vehicle's performance.
Common Causes of P1186 GMC
- Faulty engine oil temperature sensor.
- Wiring or connector issues in the engine oil temperature sensor circuit.
- Corrosion or damage to the sensor wiring harness.
- Engine oil contamination affecting sensor performance.
- Issues with the engine control module (ECM) or software.
Symptoms of P1186 GMC
- Check engine light is illuminated on the dashboard.
- Inaccurate or erratic engine oil temperature readings on the display.
- Engine overheating or running hotter than usual.
- Reduced fuel efficiency.
- Engine performance issues such as rough idling or stalling.
How to Fix P1186 GMC
- Begin by diagnosing the issue using an OBD-II scanner to confirm the P1186 GMC code.
- Inspect the engine oil temperature sensor and its wiring for any visible damage or corrosion.
- Test the sensor's resistance and voltage output to determine if it is functioning correctly.
- Replace the engine oil temperature sensor if it is found to be faulty.
- Clear the diagnostic trouble codes and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P1186 GMC
The cost of repairing the engine oil temperature sensor circuit performance issue can vary depending on the specific cause of the problem and the labor rates at the auto repair shop. Typically, the cost of replacing the engine oil temperature sensor can range from $100 to $200, including parts and labor. Additional costs may be incurred if wiring or connector issues need to be addressed. It's recommended to obtain quotes from local auto repair shops to get a more accurate estimate based on your vehicle's make and model.
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