P2420
EVAP System Switching Valve Control Circuit High
P2420 is an OBD-II diagnostic trouble code meaning: EVAP System Switching Valve Control Circuit High. Common causes: short circuit in evap valve control circuit, evap switch valve malfunction. Estimated repair cost: $17–56.
Symptoms
- Check Engine Light Is On
- Increased fuel consumption
- Difficulty starting the engine
- Unstable engine idling
- Dips during acceleration
Causes
- Short circuit in EVAP valve control circuit
- EVAP switch valve malfunction
- Broken or damaged wiring
- Relay or fuse problems
- Engine control unit (ECU) malfunction
How to Fix
- Check EVAP system fuses and relays
- Inspect the wiring harness for damage
- Check EVAP valve resistance
- Check control circuit voltage
- Replace EVAP switch valve if necessary
Related codes
Error P2420 by Vehicle Brand
FAQ
What does the P2420 code mean?
P2420 is an OBD-II diagnostic trouble code that indicates: EVAP System Switching Valve Control Circuit High
What causes a P2420 error code?
The most common causes of P2420 include: Short circuit in EVAP valve control circuit; EVAP switch valve malfunction; Broken or damaged wiring; Relay or fuse problems.
How do I fix a P2420 diagnostic trouble code?
To fix P2420: Check EVAP system fuses and relays. Inspect the wiring harness for damage. Check EVAP valve resistance. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2420?
Yes, but get it checked soon
How much does it cost to fix P2420?
The estimated repair cost for P2420 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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