P101B
Glow Plug Control Module Temperature Sensor 2 Circuit Low Voltage
P101B is an OBD-II diagnostic trouble code meaning: Glow Plug Control Module Temperature Sensor 2 Circuit Low Voltage. Common causes: malfunction of the glow plug module temperature sensor, open or short circuit in the sensor circuit. Estimated repair cost: $17–56.
Symptoms
- Difficulty starting the engine in cold weather
- Check Engine Light Is On
- Reduced engine power after a cold start
- Increased fuel consumption
- Unstable engine operation at idle
Causes
- Malfunction of the glow plug module temperature sensor
- Open or short circuit in the sensor circuit
- Poor contact in circuit connectors
- Malfunction of the glow plug control module
- Wiring Harness Problems
How to Fix
- Check the continuity of the temperature sensor circuit
- Check connections and contacts in the circuit
- Test the temperature sensor with a multimeter
- If necessary, replace the temperature sensor
- Check and, if necessary, replace the glow plug control module
Related codes
FAQ
What does the P101B code mean?
P101B is an OBD-II diagnostic trouble code that indicates: Glow Plug Control Module Temperature Sensor 2 Circuit Low Voltage
What causes a P101B error code?
The most common causes of P101B include: Malfunction of the glow plug module temperature sensor; Open or short circuit in the sensor circuit; Poor contact in circuit connectors; Malfunction of the glow plug control module.
How do I fix a P101B diagnostic trouble code?
To fix P101B: Check the continuity of the temperature sensor circuit. Check connections and contacts in the circuit. Test the temperature sensor with a multimeter. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P101B?
Yes, but get it checked soon
How much does it cost to fix P101B?
The estimated repair cost for P101B is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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