Skip the auto shop - Our mechanics make house calls
  1. Home
  2. Articles
  3. P2425 OBD-II Trouble Code: Exhaust Gas Recirculation Cooling Valve Control Circuit Open

P2425 OBD-II Trouble Code: Exhaust Gas Recirculation Cooling Valve Control Circuit Open

Check Engine Light

P2425 code definition

Exhaust Gas Recirculation Cooling Valve Control Circuit Open

What the P2425 code means

P2425 is an OBD-II generic code that the engine control module (ECM) detected the engine exhaust gas recirculation cooling bypass valve (EGRCBV) control circuit is open.

What causes the P2425 code?

  • The ECM has detected an open circuit for controlling the cooling bypass valve for the EGR system and sets the P2425 code and turns on the Check Engine Light.

  • The EGRCBV has an open circuit in the valve.

  • The connection to the EGRCBV has loose or corroded pins in the connection.

What are the symptoms of the P2425 code?

  • The Check Engine Light will be illuminated and the code is set in the ECM memory.
  • The engine could have an engine ignition ping or knock on acceleration.
  • The engine may fail emissions test from excessive NOX in the exhaust tests.
  • The EGR system may have other failures from carbon buildup in the system.

How does a mechanic diagnose the P2425 code?

  • Scans codes and documents the freeze frame data in order to verify the problem

  • Clears the engine and ETC codes and road tests the vehicle to verify the concern comes back

  • Visually checks the vacuum hoses, wiring, and connections to the EGR valve and control solenoid

  • Disconnects and checks that the EGRCBV is getting the proper power and ground signals from the ECM to open the valve when the ECM is commanded to open, and close the valve through the scanner.

Common mistakes when diagnosing the P2425 code?

  • Replacing the EGRCBV before checking the connector for corrosion on the pins

How serious is the P2425 code?

  • A failed EGR valve can cause the engine to have excessive ignition pre-ignition that can cause internal engine damage to the piston and valves.

  • The Check Engine Light on will cause the vehicle to fail emission testing from excessive NOX gases.

What repairs can fix the P2425 code?

  • Replacing the EGRCBV solenoid
  • Replacing a broken connector to the EGRCBV solenoid

Additional comments for consideration regarding the P2425 code

Code P2425 is for the EGR cooler coolant flow control valve, and if the EGR is not cooled correctly, it can get carbon fouled too quick and become clogged. This can increase the pre-ignition in the engine and cause internal piston and cylinder head damage.

Need help with a P2425 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

How to Buy Fuel Treatments
Adding a fuel additive to your gas tank when you fill up is one way to clean vital engine parts of deposits, improve the performance of your engine,...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
Veteran and Military Driver Laws and Benefits in New Mexico
The state of New Mexico offers a number of benefits and perks for those Americans who have either served in an Armed Forces branch...


Related questions

Q: Check Engine Light with code P0740

There are a number of symptoms that may accompany a P0740 code, it may be that your car will stall at stop lights, or have trouble shifting, or you may not notice anything at all except your gas mileage is...

Q: I'm getting check engine light code P0446 and P0452.

Hello, thank you for writing in. The codes may be related, or they may be separate. When it comes to the P0446, you can try to clean the EVAP vent valve with some standard cleaner for it from your local...

Q: Fuel pump Check Engine Light issue with operational fuel pump

Code 47 (OBD-1) is the only code that pertains to "fuel pump related faults" in your car, so presumably that is the code that is recurring. If it is not Code 47, but rather a different code, that you are...