P0123
09-24-2009, 02:50 PM
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P0123
P0123 Code
Description
TP SENSOR CIRCUIT HIGH VOLTAGE
Throttle Position (TP) sensor measures amount of throttle
opening. PCM uses TP sensor information for fuel delivery
calculations. TP sensor readings during acceleration are much higher
than those during deceleration or idle.
Symptoms
If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.
Description
TP SENSOR CIRCUIT HIGH VOLTAGE
Throttle Position (TP) sensor measures amount of throttle
opening. PCM uses TP sensor information for fuel delivery
calculations. TP sensor readings during acceleration are much higher
than those during deceleration or idle.
- Rough idle
- High idle
- Surging
- Stumbling
- TPS not mounted tightly
- TPS plug or wire damaged and shorting
- Defective TPS
- Damaged computer (PCM)
If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.
- Inspect TPS plug and wires, repair
- Test TPS
- Verify ECT readings match coolant gauge, need scan tool for this
