Fuel Injector Group C Supply Voltage Circuit/Open
What it means
P2152 means the PCM detected an open (or missing supply voltage) in the circuit that powers fuel-injector "Group C." Injectors need battery voltage on their supply side to fire, so when that circuit opens, the affected cylinders can't inject fuel — leading to misfires, rough running, stalling, or a no-start. The fault is almost always electrical: broken wiring, a blown fuse or relay, a bad connector, or a failed injector driver module.
Can I keep driving? Limited — a group of injectors may lose power, so the engine can misfire, run rough, stall, or fail to start; have it looked at before driving far.
Common symptoms
What you'll notice
- Check-engine light on
- Rough running, misfire, or stumbling
- Hard starting, no-start, or stalling
- Noticeable loss of power
Common causes
Most likely first
- Open or shorted wiring in the injector 'Group C' supply circuitLikely
- Blown fuse or faulty relay feeding the injector groupCommon
- Poor or corroded connection at the injector or module connectorCommon
- Faulty fuel injector control module (FICM) or injector driverLess often
- Faulty PCM (least likely)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and check for companion injector codes.
- Check the fuse and relay that supply the injector group, then do a visual inspection of the wiring.
- Measure the supply voltage at the Group C injector connectors, key on.
- Test the control module ground circuits against battery ground.
- Repair the open/short in the supply circuit; replace the FICM/injector driver if it isn't delivering voltage. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P2152?+
Can I just clear P2152?+
Related codes
Often seen with P2152
Read & clear P2152 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.