Code No. P0123:
Throttle Position Sensor High
DIAGNOSIS CONTENT
Voltage above upper limit
TROUBLE JUDGMENT
Check Condition
Judgment Criterion
- Throttle position sensor output voltage is above the threshold.
FAIL SAFE FUNCTION
- Throttle position sensor signal is recognized as specified
value.
PROBABLE CAUSE
- Failed throttle position sensor
- Failed electrical harness in throttle position sensor circuit
(Refer to Symptom Procedure - Throttle Position Sensor System 
.)