P004A
Turbocharger/Supercharger Boost Control B Circuit/Open
P004A is an OBD-II diagnostic trouble code meaning: Turbocharger/Supercharger Boost Control B Circuit/Open. Common causes: broken wiring harness, turbo control solenoid malfunction. Estimated repair cost: $56–167.
Symptoms
- Reduced engine power
- Increased fuel consumption
- Unstable engine operation
Causes
- Broken wiring harness
- Turbo control solenoid malfunction
- Turbocharger problems
- Short circuit in the circuit
How to Fix
- Check the integrity of the wiring harness
- Check the operation of the control solenoid
- Diagnose a turbocharger
- Check fuses and relays
Related codes
Error P004A by Vehicle Brand
FAQ
What does the P004A code mean?
P004A is an OBD-II diagnostic trouble code that indicates: Turbocharger/Supercharger Boost Control B Circuit/Open
What causes a P004A error code?
The most common causes of P004A include: Broken wiring harness; Turbo control solenoid malfunction; Turbocharger problems; Short circuit in the circuit.
How do I fix a P004A diagnostic trouble code?
To fix P004A: Check the integrity of the wiring harness. Check the operation of the control solenoid. Diagnose a turbocharger. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P004A?
Limited driving only, diagnose soon
How much does it cost to fix P004A?
The estimated repair cost for P004A is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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