Subaru OBD-II 1996 & Newer models DTC P1312 – Exhaust temperature sensor malfunction
DTC P1312 meaning on Subaru OBD-II 1996 & Newer models
The DTC P1312 on Subaru OBD-II 1996 & Newer models indicates a malfunction in the exhaust temperature sensor circuit. This sensor is responsible for monitoring the exhaust gas temperature and providing feedback to the engine control module.
Subaru OBD-II 1996 & Newer models DTC P1312 symptoms
Some common symptoms of DTC P1312 on Subaru vehicles may include:
- Illuminated check engine light
- Decreased fuel efficiency
- Engine running rough or misfiring
- Increased emissions
Subaru OBD-II 1996 & Newer models DTC P1312 causes
The DTC P1312 code can be triggered by various factors, including:
- Faulty exhaust temperature sensor
- Wiring issues in the sensor circuit
- Corrosion or poor connections in the sensor circuit
- ECU (Engine Control Unit) malfunction
Subaru OBD-II 1996 & Newer models DTC P1312 seriousness
While DTC P1312 may not cause immediate drivability issues, it can lead to poor engine performance and increased emissions if left unresolved. It is recommended to address this issue promptly to prevent further damage to the vehicle.
How to diagnose DTC P1312 on Subaru OBD-II 1996 & Newer models
To diagnose DTC P1312, a mechanic may perform the following steps:
- Use an OBD-II scanner to retrieve the fault code
- Inspect the exhaust temperature sensor and its wiring for any visible damage
- Check the sensor’s resistance with a multimeter to determine if it is faulty
- Verify the sensor’s signal output using a scan tool
How to fix DTC P1312 on Subaru OBD-II 1996 & Newer models
To resolve DTC P1312 on Subaru vehicles, the following steps may be taken:
- Replace the faulty exhaust temperature sensor
- Repair any damaged wiring or connectors in the sensor circuit
- Clean any corrosion in the sensor circuit connections
- If necessary, diagnose and address any ECU issues
How to erase DTC P1312 on Subaru OBD-II 1996 & Newer models
After fixing the underlying issue causing DTC P1312, the fault code can be cleared using an OBD-II scanner. This will reset the check engine light and erase the diagnostic trouble code from the vehicle’s memory.