- Check the ECT sensor signal circuit for a short to sensor ground
- Check the ECT sensor signal circuit for a short to chassis ground
- Replace the ECT sensor
- Replace the PCM
When your Daewoo vehicle has a P0117 code, it can be a source of confusion and frustration. This code indicates an Engine Coolant Temperature Sensor Circuit Low Input and can be difficult to diagnose and repair. It typically occurs when the engine is started, running for over 60 seconds, and the Powertrain Control Module (PCM) detects that the Engine Coolant Temperature (ECT) sensor signal is too low during the test period. The causes of this code can range from a short in the ECT sensor signal circuit to the sensor ground, to a damaged ECT sensor or a failed PCM.
Causes and Solutions of the Daewoo P0117 Code
| Cause | Solution |
|---|---|
| ECT sensor signal circuit is shorted to sensor ground | Check the ECT sensor signal circuit for a short to sensor ground |
| ECT sensor signal circuit is shorted to chassis ground | Check the ECT sensor signal circuit for a short to chassis ground |
| ECT sensor is damaged or has failed | Replace the ECT sensor |
| PCM has failed | Replace the PCM |
When a Daewoo vehicle has the P0117 code, it means that the Engine Coolant Temperature Sensor Circuit Low Input has been detected by the Powertrain Control Module (PCM). This code can be tricky to diagnose and repair, as the causes are varied and range from a short in the ECT sensor signal circuit to the sensor ground, to a damaged ECT sensor or a failed PCM. Since this code can be difficult to solve, it is helpful to investigate the potential causes and solutions in order to find the best route for repairing the problem.
ECT Sensor Signal Circuit is Shorted to Sensor Ground
The first potential cause of the P0117 code is that the ECT sensor signal circuit is shorted to the sensor ground. This can occur when the engine is first started and the PCM detects that the ECT sensor signal is too low during the test period. To diagnose this issue, the mechanic must check the ECT sensor signal circuit for a short to sensor ground. If the issue is found, then the mechanic must replace the ECT sensor or the PCM.
ECT Sensor Signal Circuit is Shorted to Chassis Ground
The second potential cause of the P0117 code is that the ECT sensor signal circuit is shorted to the chassis ground. This can occur when the engine is running for over 60 seconds and the PCM detects that the ECT sensor signal is too low during the test period. To diagnose this issue, the mechanic must check the ECT sensor signal circuit for a short to chassis ground. If the issue is found, then the mechanic must replace the ECT sensor or the PCM.
ECT Sensor is Damaged or has Failed
The third potential cause of the P0117 code is that the ECT sensor is damaged or has failed. This can occur when the engine is running for over 60 seconds and the PCM detects that the ECT sensor signal is too low during the test period. To diagnose this issue, the mechanic must replace the ECT sensor. If the issue is not found, then the mechanic must replace the PCM.
PCM has Failed
The fourth potential cause of the P0117 code is that the PCM has failed. This can occur when the engine is running for over 60 seconds and the PCM detects that the ECT sensor signal is too low during the test period. To diagnose this issue, the mechanic must replace the PCM.
Conclusion
In conclusion, the Daewoo P0117 code indicates an Engine Coolant Temperature Sensor Circuit Low Input and can be difficult to diagnose and repair. The causes of this code can range from a short in the ECT sensor signal circuit to the sensor ground, to a damaged ECT sensor or a failed PCM. It is helpful to investigate the potential causes and solutions in order to find the best route for repairing the problem. By understanding the potential causes and solutions for the Daewoo P0117 Code, the mechanic will be able to diagnose and repair the issue quickly and efficiently.
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