FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.

P0122

Tests 1 - 2:




Tests 3 - 7:




Tests 8 - 10:





SYMPTOM
P0122 - THROTTLE POSITION SENSOR VOLTAGE LOW

WHEN MONITORED
With the ignition ON.

SET CONDITION
TP sensor voltage at PCM cavity 35 goes below 0.2 volt for 0.704 seconds.

POSSIBLE CAUSES
- TPS 5-volt supply circuit open
- TPS signal circuit shorted to ground
- TPS signal circuit shorted to sensor ground circuit
- TPS wiring harness intermittent defect
- TPS wiring harness observable defect
- PCM defective (TPS voltage low)
- Throttle position sensor defective
- TPS voltage change not smooth
- Transmission control module defective (TPS)