P0477 Code - Exhaust Pressure Control Valve 'A' Low

What Does P0477 Mean?

Regarding the P0477 code, it would probably be worthwhile to carefully inspect the wire harness near the intake manifold bracket. This is done most easily from below the car in the area near the oil filter. When you see P0477 engine fault code on your engine code reader this description will help you.

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obd code P0477	obd2 P0477	P0477 car code	diagnostic code P0477
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codigo P0477	codigo falla P0477	P0477 kody b??dów	codigo de falla P0477

What are the common causes of P0477 ?

• Vacuum leak on the engine
• Reduction in engine performance, especially at low RPM levels
• Engine surge
• The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

How do you troubleshoot P0477 ?

Repairing the issue that caused the PCM to store the P0477 code can take many forms. Repairs may include:

• Unclogging or repairing the back pressure tube.
• Cleaning, repairing, or replacing the exhaust back pressure sensor.
• Repairing or replacing a faulty exhaust back pressure valve.
• Repairing or replacing an opened or shorted exhaust back pressure valve harness.
• Repairing a poor electrical connection in the exhaust back pressure valve circuit.
• Replacing faulty exhaust back pressure valve solenoids.
• Repairing or replacing any faulty electrical components, such as wiring or connectors.
• Replacing a faulty PCM in certain rare cases.
• Diagnosing and repairing any issues related to other codes stored in the PCM regarding the back exhaust pressure system.
• Repairing or replacing faulty EBP, EOT, or IAT sensors.

Searches related to P0477 Code - Exhaust Pressure Control Valve 'A' Low

• P0477
• P0478