Check 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.
The cost to diagnose the P1250 Buick code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.
With the engine running, BARO input over 75 kPa, Intake Air Temperature (IAT) input from 14-122°F, fuel level over 25% then the Powertrain Control Module (PCM) detects that the Early Fuel Evaporation (EFE) resistor circuit voltage was below 2.5v with the EFE heater off, or the circuit voltage was over 0.3v with the EFE heater on for 5 seconds.
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