U355F
Cathode Backpressure Valve Control Circuit
U355F is an OBD-II diagnostic trouble code meaning: Cathode Backpressure Valve Control Circuit. Common causes: open or short circuit in control circuit, faulty cathode back pressure valve. Estimated repair cost: $17–56.
Symptoms
- Check Engine Light Is On
- Deterioration of vehicle dynamics
- Increased fuel consumption
- Unstable engine operation at idle
- Increased exhaust noise level
Causes
- Open or short circuit in control circuit
- Faulty cathode back pressure valve
- Wiring harness damage
- Contact corrosion
- Control unit malfunction
How to Fix
- Check valve control circuit integrity
- Check valve resistance
- Inspect the wiring harness for damage
- Check contacts for corrosion
- If necessary, replace the cathode backpressure valve
Related codes
Error U355F by Vehicle Brand
FAQ
What does the U355F code mean?
U355F is an OBD-II diagnostic trouble code that indicates: Cathode Backpressure Valve Control Circuit
What causes a U355F error code?
The most common causes of U355F include: Open or short circuit in control circuit; Faulty cathode back pressure valve; Wiring harness damage; Contact corrosion.
How do I fix a U355F diagnostic trouble code?
To fix U355F: Check valve control circuit integrity. Check valve resistance. Inspect the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U355F?
Yes, but get it checked soon
How much does it cost to fix U355F?
The estimated repair cost for U355F is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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