P1294 Target Idle Not Reached

SYMPTOM
P-1294 TARGET IDLE NOT REACHED

WHEN MONITORED
Engine idling more than 2.8 seconds and coolant temp greater than 160 degrees F. For an automatic transmission, in drive mode. There must not be a MAP Sensor or TP Sensor or speed sensor trouble code.

SET CONDITION
Engine idle is > 200 RPM above target idle speed or less than 100 RPM below target idle speed for 20 seconds. Two consecutive failures in a row will store this trouble code.

POSSIBLE CAUSES
- Eng vacuum hoses and components leaks
- Throttle body defective
- Throttle plate/linkage not in correct position
- IAC wiring harness intermittent defect
- IAC wiring harness observable defective