Having problems with your 2002 Jeep Liberty ?
P0123, p0121 - 2002 Jeep Liberty
123 throttle position sensor/switch A circuit high input 121 throttle position sensor/switch A circuit range/performance problem if running fine try reset--- if running rough black smoke star problems check the TPS wiring ,connections,and mounting if looks good not grounding ,rubbing or damage to wiring than test TPS sensor
Repair Help & Product Troubleshooting for 2002 Jeep Liberty
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