P112A
Engine Coolant Temperature Sensor 1 Maximum Temperature Implausible
P112A is an OBD-II diagnostic trouble code meaning: Engine Coolant Temperature Sensor 1 Maximum Temperature Implausible. Common causes: faulty coolant temperature sensor, open or short circuit in the sensor circuit. Estimated repair cost: $6–33.
Symptoms
- Unrealistically high temperature readings on the dashboard
- Floating idle speed
- Increased fuel consumption
- Problems starting a hot engine
- Check Engine Light Is On
Causes
- Faulty coolant temperature sensor
- Open or short circuit in the sensor circuit
- Poor contact in the sensor connector
- Corroded contacts or damaged wires
- Problems with the engine ECU
How to Fix
- Check sensor resistance at different temperatures
- Inspect the sensor circuit for damage
- Check the contacts in the sensor connector
- Replace the coolant temperature sensor if necessary
- Reset the error code and check for its reappearance
Related codes
FAQ
What does the P112A code mean?
P112A is an OBD-II diagnostic trouble code that indicates: Engine Coolant Temperature Sensor 1 Maximum Temperature Implausible
What causes a P112A error code?
The most common causes of P112A include: Faulty coolant temperature sensor; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Corroded contacts or damaged wires.
How do I fix a P112A diagnostic trouble code?
To fix P112A: Check sensor resistance at different temperatures. Inspect the sensor circuit for damage. Check the contacts in the sensor connector. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P112A?
Limited driving only, diagnose soon
How much does it cost to fix P112A?
The estimated repair cost for P112A is $6–33. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat