Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
P0120-Electronic Throttle Control Motor Performance: Notes
- When Monitored : Ignition on with no MAP Sensor DTCs set.
- Set Condition : TP Sensor signals in the Throttle Body do not correlate to the MAP Sensor signal.
| Possible Causes |
|---|
| TP SENSOR SIGNAL CIRCUIT(S) SHORT TO VOLTAGE |
| TP SENSOR SIGNAL CIRCUIT(S) SHORT TO GROUND |
| TP SENSOR SIGNAL CIRCUIT(S) SHORT TO ANOTHER CIRCUIT |
| TP SIGNAL CIRCUIT(S) OPEN |
| 5-VOLT SUPPLY CIRCUIT SHORT TO VOLTAGE |
| 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND |
| 5-VOLT SUPPLY CIRCUIT OPEN |
| APP SENSOR 5-VOLT SUPPLY CIRCUIT SHORT TO VOLTAGE |
| APP SENSOR 5-VOLT SUPPLY CIRCUIT SHORT TO GROUND |
| SENSOR GROUND CIRCUIT OPEN |
| THROTTLE CONTROL MOTOR CIRCUIT(S) SHORT TO VOLTAGE |
| THROTTLE CONTROL MOTOR CIRCUIT(S) SHORT TO GROUND |
| THROTTLE CONTROL MOTOR CIRCUIT(S) OPEN |
| THROTTLE BODY |
| POWERTRAIN CONTROL MODULE |
For a complete Powertrain Control Module Circuit Diagram, refer to SCHEMATICS AND DIAGRAMS .
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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