P1260 CADILLAC Possible Causes
- Faulty fuel pump speed relay
- Fuel pump speed relay harness is open or shorted
- Poor electrical connection in the fuel pump speed relay circuit
How is the P1260 CADILLAC code repaired?
Start by checking the “Possible Causes” listed above. Visually inspect the wiring harness and associated connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
- Check Engine Light on (or Service Engine Soon warning light)
P1260 CADILLAC Meaning
With the key on or the engine running, the Powertrain Control Module (PCM) detects an incorrect voltage level on the fuel pump speed control PWM circuit, condition met for at least 30 seconds.