P102A Possible Causes
- Faulty auxiliary fuel pump relay
- Faulty auxiliary fuel solenoid
- Fuel solenoid wiring harness is open or short-circuited
- Poor electrical connection in auxiliary fuel solenoid circuit
- Faulty auxiliary fuel pump
How is P102A Code Repaired?
Begin by checking the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
Illuminated check engine light (or service engine soon warning light)
P102A Meaning
The Engine Control Module (ECM) monitors the auxiliary fuel solenoid circuit for proper operation. The ECM sets the OBDII code when the auxiliary fuel solenoid does not meet factory specifications.