P112A Possible Causes
- Low engine coolant level
- Faulty thermostat
- Faulty engine coolant temperature sensor
- Engine coolant temperature sensor harness is open or shorted
- Poor electrical connection in engine coolant temperature sensor circuit
How is code P112A repaired?
Start by checking the “possible causes” listed above. Visually inspect the related wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
- Check engine light on (or service engine soon warning light)
P112A Meaning
The engine control module (ECM) monitors the signal from the engine coolant temperature sensor. The ECM sets the OBDII code when the engine coolant temperature sensor is outside factory specifications.