P1282
Fuel Pump Relay Control Circuit Open Or Shorted.
- Plymouth
- Powertrain
- Manufacturer code
- High severity
How this code is built
- P
- SystemPowertrain
- 1
- Defined byThe manufacturer
- 2
- AreaFuel and air metering (injector circuit)
- 82
- FaultThe specific fault in that area
What it means
On a Plymouth, P1282 means the powertrain control module has detected a fault in the control circuit for the fuel pump relay, either an open circuit or a short. The module commands the relay on and off and monitors the circuit, and it set the code when the voltage it saw did not match what it commanded.
Symptoms
- Engine cranks but does not start
- Intermittent stalling or cutting out while driving
- Long cranking before the engine fires
- No fuel pump priming noise when the ignition is switched on
- Check engine light on
Possible causes
- Faulty fuel pump relay (internal open or shorted coil)likely
- Corroded, loose or damaged connectors or terminals at the relay socket or its power distribution boxlikely
- Open or chafed wiring in the relay control circuit between the relay and the PCMlikely
- Control wire shorted to ground or to voltagepossible
- Blown fuse or a fault in the relay's power supply feedpossible
- Faulty powertrain control module driver circuitrare
How to diagnose
- Read the stored and pending codes and note the freeze frame data, then check whether the code is current or history
- Listen for the fuel pump priming for a couple of seconds when the ignition is switched on
- Check the relevant fuses and inspect the relay socket, connectors and terminals for corrosion, heat damage or looseness
- Swap the fuel pump relay with a known good relay of the same type, if the layout allows, and retest
- Test the relay coil resistance and check the relay contacts switch properly when energised
- With the relay removed, check the control circuit for power, ground and continuity back to the PCM using the wiring diagram for the specific model and engine
- Check the control wire for chafing or shorts to ground or voltage along the harness
- If wiring and relay are good, check the PCM driver output and connector before considering the module
How to fix
- Replace the faulty fuel pump relay
- Clean or repair corroded relay socket terminals and connectors
- Repair or replace open, chafed or shorted wiring in the relay control circuit
- Replace the blown fuse after finding and correcting the cause of the overload
- Repair or replace the PCM only once all wiring and relay faults are ruled out
Can I keep driving?
High severity
Avoid driving the car, as the fuel pump may cut out without warning and leave you stalled, which is unsafe in traffic. Get it diagnosed and repaired before further use.
Guide written by AI from the code's definition. Confirm with a diagnosis before replacing parts.
This code for other makes
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