Skip the auto shop - Our mechanics make house calls

P2510 OBD-II Trouble Code: ECM/PCM Power Relay Sense Circuit Range/Performance

check engine light logo

P2510 trouble code definition

ECM/PCM Power Relay Sense Circuit Range/Performance

What the P2510 code means

P2510 is an OBD-II generic code for the engine control module detecting the ignition relay is open or shorted causing the relay to not come on or turn off.

What causes the P2510 code?

The ECM is detecting a signal through the ignition control relay and the relay contacts failed to close when commanded to close or the relay would not turn off when commanded to turn off.

What are the symptoms of the P2510 code?

  • The Check Engine Light will be illuminated and the code is set in ECM memory as a fault. The light will stay on unless the problem goes away for at least 3 engine key cycles.

  • The vehicle may not start or may not shut off when turning the key to start or turn off the vehicle.

  • The OBD2 scanner port will not be able to access the ECM.

How does a mechanic diagnose the P2510 code?

  • Scans for codes and documents any in the ECM to look at the freeze frame data for the failure

  • Checks ignition relay for loose or corroded pins

  • Checks ignition fuses in the main fuse box for connections

  • Installs a known good relay and tries to start the vehicle

  • Checks the connector and wiring for corrosion, causing an open in the relay circuit

Common mistakes when diagnosing the P2510 code

  • Clearing ECM memory codes before checking the freeze frame data for the main failure problem, so the failure may be duplicated and repaired

  • Failing to clear the ECM codes after the codes are fixed

  • Replacing the ECM when no communication is found when it is the ignition relay

How serious is the P2510 code?

Code P2510 is an indication that the ECM signal from the ignition relay is open or shorted and the engine may not start or shut down.

What repairs can fix the P2510 code?

Additional comments for consideration regarding the P2510 code

Code P2510 is for shorted or open ignition relay circuits and the most common fault is the ignition relay contacts either stick closed or the relay will not make contact when engaged.

Search technical bulletins for shorted harnesses on some vehicles that may cause the code and a no start or stall while driving.

Need help with a P2510 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

What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
Auto Safety Tips
Driving is more than a way to get from point A to point B. Owning and driving a car can also be a highly enjoyable experience. Whether a person is driving...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...


Related questions

Q: i have this code for my 2008 nissan sentra po725 readng the symptoms i have none car runs perfect in fact like about 9 months ago

I am unable to tell you exactly what is going on with your vehicle without more information, but I can give you the information I have available on the diagnostic trouble codes (DTC's) that you have listed. The P0725 relates...

Q: Check Engine Light and emission light are on. Is the car still safe to use? - 2010 Hyundai Accent

The warning lights you are seeing are very generic. There is no way at this point of knowing if the issue is dangerous or not. You need to have the vehicle scanned for diagnostic troubleshooting codes ASAP. This can be...

Q: My car cut off on the highway and wont start back up.

Good question. PO443 Code is an HVAC code. To your question, no. When a mechanic hears that a car shut off while driving it is because the alternator quit working. Your battery however, may be dead too. You can take...