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Q:

showing p0123 on 2003 Jeep Wrangler

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
rough idling and sometimes wont pull. lacks power
(1) Answer
REPLACE IT

SYMPTOM
P0123-THROTTLE POSITION SENSOR VOLTAGE TOO HIGH

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

SET CONDITION
Throttle Position Sensor signal voltage at the PCM goes above 4.5 volts for 3.2 seconds .

POSSIBLE CAUSES

•TP sensor sweep
•TP sensor
•Intermittent condition
•(K22) TP sensor # 1 signal circuit shorted to voltage
•(K22) TP sensor # 1 signal circuit open
•(K22) TP sensor # 1 signal circuit shorted to (K7) 5-volt supply circuit
•(K4) sensor ground circuit open
•PCM