P1282
Fuel Pump Relay Control Circuit Condition
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The P1282 code on Chrysler, Dodge, and Jeep vehicles indicates that the Powertrain Control Module (PCM) has detected an open or shorted condition in the fuel pump relay control circuit. The fuel pump relay is essentially the on/off switch for the fuel pump — the PCM activates this relay to supply power to the fuel pump whenever the engine is running. When the control circuit has a problem, fuel delivery can become intermittent or stop entirely.
The most likely culprit is the relay itself, which is a small, inexpensive component usually located in the underhood fuse/relay box. Relays are electromechanical devices that wear out over time, and replacing one is typically a simple plug-and-pull operation that costs under $20 for the part. Before replacing the relay, visually inspect the relay socket for burned or corroded pins, and check that the associated fuse is intact.
This code should be addressed soon because an intermittent fuel pump relay can cause unexpected stalling while driving, which is a safety hazard. If the relay and fuse check out fine, the issue is likely in the wiring between the PCM and the relay box, which may require more involved diagnosis. A multimeter test of the circuit can pinpoint the location of the open or short.
Severity
Symptoms
- •Engine stalls unexpectedly while driving
- •Difficulty starting the engine or extended cranking before start
- •Check engine light illuminated
- •Engine sputters or loses power intermittently
- •No fuel pump priming sound when turning key to the ON position
Likely Causes
The fuel pump relay controls power delivery to the fuel pump. Internal contact wear, corrosion, or thermal failure can cause an open or shorted condition that the PCM detects on the relay control circuit.
Damaged or corroded wiring between the PCM and the fuel pump relay can create an open or short circuit. The PCM monitors the circuit voltage and sets this code when it detects an abnormal condition.
Corrosion, bent pins, or heat damage at the relay socket in the fuse box can create high resistance or intermittent contact, affecting the relay's ability to switch properly.
In rare cases, the internal transistor in the PCM that drives the fuel pump relay can fail, preventing proper relay activation. This is uncommon but possible on high-mileage vehicles.
Estimated Cost
Professional Repair
Includes parts + labor
Common Fixes
- Replace the fuel pump relay
- Inspect and repair wiring harness between PCM and relay for damage or corrosion
- Clean or replace corroded relay socket pins in the fuse box
- Check the relay fuse and replace if blown