P04AD
EVAP System Purge Control Valve B Circuit High
P04AD is an OBD-II diagnostic trouble code meaning: EVAP System Purge Control Valve B Circuit High. Common causes: open or short circuit in the purge valve wiring harness, purge solenoid valve malfunction. Estimated repair cost: $56–167.
Symptoms
- Check Engine Light Is On
- Increased fuel consumption
- Unstable engine idling
- The smell of gasoline in or around the car
Causes
- Open or short circuit in the purge valve wiring harness
- Purge solenoid valve malfunction
- Connector problems or contact corrosion
- Malfunction of the engine control unit (rare)
How to Fix
- Check the purge valve wiring harness and connectors for damage and corrosion.
- Check the resistance of the purge valve (must meet manufacturer's specifications)
- Check valve control circuit voltage
- Replace the purge valve if a fault is detected
- Clean or replace damaged wires or connectors
- Reset the error code and check if it returns
Related codes
Error P04AD by Vehicle Brand
FAQ
What does the P04AD code mean?
P04AD is an OBD-II diagnostic trouble code that indicates: EVAP System Purge Control Valve B Circuit High
What causes a P04AD error code?
The most common causes of P04AD include: Open or short circuit in the purge valve wiring harness; Purge solenoid valve malfunction; Connector problems or contact corrosion; Malfunction of the engine control unit (rare).
How do I fix a P04AD diagnostic trouble code?
To fix P04AD: Check the purge valve wiring harness and connectors for damage and corrosion.. Check the resistance of the purge valve (must meet manufacturer's specifications). Check valve control circuit voltage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P04AD?
Limited driving only, diagnose soon
How much does it cost to fix P04AD?
The estimated repair cost for P04AD is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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