How is the P1257 CADILLAC code repair performed?
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
- Engine light on (or service engine soon warning light)
P1257 CADILLAC Meaning
With the engine running, the intake air temperature (IAT) sensor enters above 14°F, then the powertrain control module (PCM) detects that the engine torque was above a maximum threshold value (actual value versus commanded and RPM) for 6 seconds.