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Home >> Jeep >> 2002 >> Grand Cherokee 2WD Laredo V8-4.7L >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> P Code Charts >> P0122

P0122

Tests 1 - 2:




Tests 3 - 7:




Tests 8 - 11:




Test 12:




SYMPTOM
P0122-TPS VOLTAGE LOW

WHEN MONITORED
With the ignition ON and battery voltage above 10.4 volts.

SET CONDITION
Throttle Position Sensor voltage at the PCM is lower than 0.1 of a volt for 1.3 seconds.

POSSIBLE CAUSES
- Throttle position sensor sweep
- Intermittent condition
- 5 volt supply circuit shorted to ground
- 5 volt supply circuit open
- Throttle position sensor internal failure
- TPS signal circuit shorted to ground
- Throttle position sensor signal circuit shorted to sensor ground circuit
- TCM internally shorted throttle position signal circuit
- PCM 5 volt supply circuit
- PCM TPS signal circuit