OBD-II code · Powertrain (generic, extended)
P2425 EGR Cooling Valve Control Circuit Open
The valve that admits coolant flow to the EGR cooler has an open control circuit - cooling cannot be enabled and EGR temperatures stay too high.
Is it safe to drive with P2425?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyOpen in valve or wiring
- Less likelyPin pushed back out of connector body
- Less likelyCracked solder joint inside the module or sensor
Symptoms
- Check engine light on
- Pinging or knocking under load
- Power loss and hesitation
- Possible rough idle
- Failed emissions inspection (NOx)
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.6–2 h
- Emissions test
- Likely to fail
- Parts involved
- Egr Cooling Valve
Related codes
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.