Fault Code P0477
Code meaning, symptoms, possible causes, part number, and estimated cost.
P0477
Exhaust Pressure Control Valve 'A' Circuit Low
This code indicates a lower-than-expected voltage reading in the exhaust pressure control valve 'A' circuit. This can cause the valve to not operate correctly.
Part Details
Part Name
Exhaust Pressure Control Valve 'A'
Reference P/N (OEM)
N/A
General part number for this fault code — not necessarily for your specific vehicle
Estimated Cost
₪400 - ₪1500
Engine Location
Exhaust system/Engine
Symptoms
- Engine performance reduction
- Check Engine Light on
- Smoke from the exhaust
- Unusual noises
Possible Causes
- 1Wiring short to ground in the valve circuit
- 2Faulty exhaust pressure control valve 'A'
- 3Faulty connector
- 4Engine Control Unit (ECU) issue
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