P1250 CHEVROLET Possible Causes
- Faulty Early Fuel Evaporation (EFE) heater
- Early Fuel Evaporation (EFE) heater circuit open or shorted
- Poor electrical connection in Early Fuel Evaporation (EFE) heater circuit
How is P1250 CHEVROLET Code Repaired?
Start 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
- Engine Light On (or Service Engine Soon Warning Light)
P1250 CHEVROLET Meaning
With engine running, BARO input greater than 75 kPa, Intake Air Temperature (IAT) input between 14-122°F, fuel level greater than 25%, then the Powertrain Control Module (PCM) detected that the Early Fuel Evaporation (EFE) heater circuit voltage was less than 2.5V with EFE heater off, or circuit voltage was greater than 0.3V with EFE heater on for 5 seconds.