Diagnostic Aids
A skewed MAP sensor may cause this DTC to set. If TP sensor operates properly and DTC continues to set, check for proper operation of MAP sensor.
PCM 5-volt reference circuits are internally connected within PCM. If DTC is intermittent, performing DTC P1121 may help isolate concern. See DTC P1121: TP SENSOR CIRCUIT INTERMITTENT HIGH VOLTAGE .
If problem is intermittent, see INTERMITTENT TROUBLE CODE DETERMINATION under SELF-DIAGNOSTIC SYSTEM.