Subaru 1984 – 1986 Fuel injected models DTC 33 – Coolant sensor or circuit
DTC 33 meaning on Subaru 1984 – 1986 Fuel injected models
DTC 33 indicates a problem with the coolant sensor or circuit in Subaru 1984 – 1986 Fuel injected models. The Engine Control Module (ECM) detects an issue with the coolant sensor’s signal or circuit, affecting the engine’s performance.
Subaru 1984 – 1986 Fuel injected models DTC 33 symptoms
1. Engine running too rich or too lean
2. Poor fuel economy
3. Engine overheating
4. Rough idling or stalling
5. Check Engine Light (CEL) illuminated
Subaru 1984 – 1986 Fuel injected models DTC 33 causes
1. Faulty coolant sensor
2. Wiring or connector issues in the coolant sensor circuit
3. Coolant sensor out of calibration
4. ECM malfunction
Subaru 1984 – 1986 Fuel injected models DTC 33 seriousness
DTC 33 should be addressed promptly to prevent potential engine damage or poor performance. Ignoring this issue can lead to overheating, reduced fuel efficiency, and other engine-related problems.
How to diagnose DTC 33 on Subaru 1984 – 1986 Fuel injected models
1. Check the coolant sensor’s wiring and connector for any damage or corrosion.
2. Test the coolant sensor’s resistance and compare it to specifications.
3. Inspect the coolant level and system for proper operation.
4. Use a scan tool to monitor coolant sensor data and compare it to actual temperature readings.
How to fix DTC 33 on Subaru 1984 – 1986 Fuel injected models
1. Replace the faulty coolant sensor if it fails testing.
2. Repair any damaged wiring or connectors in the coolant sensor circuit.
3. Calibrate the new coolant sensor if necessary.
4. Reset the ECM by disconnecting the battery for a few minutes to clear the DTC.
How to erase DTC 33 on Subaru 1984 – 1986 Fuel injected models
To clear DTC 33 from the ECM’s memory, you can disconnect the battery for a few minutes. This will reset the ECM and erase the stored fault code. However, it is recommended to address the underlying issue causing DTC 33 before clearing the code to prevent it from reoccurring.
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