P0123

Tests 123 - 127:

Tests 128 - 133:

SYMPTOM
P-0123 THROTTLE POSITION SENSOR VOLTAGE HIGH

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

SET CONDITION
TP sensor voltage at PCM goes above 4.9 volts for 3.2 seconds.

POSSIBLE CAUSES
- Throttle position sensor ground circuit open
- TPS signal circuit shorted to 5 volt supply ckt
- TPS wiring harness intermittent defect (rpm)
- Powertrain control module defective
- Throttle position sensor defective (A)
- Throttle position sensor defective (B)
- Signal ckt shtd to voltage or s/c switch signal ckt
- Throttle position sensor signal circuit open
- TPS wiring harness intermittent defect (volt)
- TPS wiring harness observable defect