P0A02
Motor Electronics Coolant Temperature Sensor A Circuit Low
P0A02 is an OBD-II diagnostic trouble code meaning: Motor Electronics Coolant Temperature Sensor A Circuit Low. Common causes: coolant temperature sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $6–33.
Symptoms
- Unstable engine operation
- Increased fuel consumption
- Problems starting the engine
- Check Engine indicator on the dashboard
- Incorrect temperature readings on the dashboard
Causes
- Coolant temperature sensor malfunction
- Open or short circuit in the sensor circuit
- Poor contact in sensor connectors
- Corroded contacts or damaged wiring
- Engine ECU malfunction
How to Fix
- Check the condition of the coolant temperature sensor
- Check the integrity of the wiring and connectors in the sensor circuit
- Measure sensor resistance at different temperatures
- Check the voltage in the sensor circuit
- If necessary, replace the sensor or repair the wiring
Related codes
Error P0A02 by Vehicle Brand
FAQ
What does the P0A02 code mean?
P0A02 is an OBD-II diagnostic trouble code that indicates: Motor Electronics Coolant Temperature Sensor A Circuit Low
What causes a P0A02 error code?
The most common causes of P0A02 include: Coolant temperature sensor malfunction; Open or short circuit in the sensor circuit; Poor contact in sensor connectors; Corroded contacts or damaged wiring.
How do I fix a P0A02 diagnostic trouble code?
To fix P0A02: Check the condition of the coolant temperature sensor. Check the integrity of the wiring and connectors in the sensor circuit. Measure sensor resistance at different temperatures. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0A02?
Yes, but get it checked soon
How much does it cost to fix P0A02?
The estimated repair cost for P0A02 is $6–33. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat