Skip the auto shop - Our mechanics make house calls
  1. Home
  2. Articles
  3. P2510 OBD-II Trouble Code: ECM/PCM Power Relay Sense Circuit Range/Performance

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

Insurance Requirements for Car Registration in Kentucky
The Kentucky Transportation Cabinet requires that all drivers in Kentucky carry liability automotive insurance, or “financial responsibility” in order to operate a vehicle legally and maintain vehicle...
How to Get a Louisiana Driver's Permit
s licensing program. The first step in this program is to obtain...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...


Related questions

Q: P0302 code/CEL. Spark plugs could be cause but not sure

This code relates to a misfire which may be caused by many different reasons. This may be caused by faulty spark plug wires or plugs, a faulty coil pack, faulty O2 sensors or potentially a dirty or clogged fuel injector....

Q: increased engine over load message.

Hi there. The message is coming on for the catalytic converter overheating. A misfire or leaking injector will cause the catalytic converter to overheat as raw fuel enters the exhaust system. Check the engine for a misfire and see which...

Q: I have a 1986 Chrysler Laser turbo with 13700 miles that failed emissions. Do oxygen sensors go bad from sitting around too long?

Wow, I almost bought one of these new back in 1986. It is possible that due to age, any number of sensors can be bad, even without a Check Engine Light being set. The best way to determine that is...