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.
P0221-Electronic Throttle Control Module Processor: 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 |
|---|
| THROTTLE POSITION SENSOR SWEEP |
| THROTTLE POSITION SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE |
| THROTTLE POSITION SENSOR SIGNAL CIRCUIT OPEN |
| 5-VOLT SUPPLY CIRCUIT OPEN |
| 5-VOLT SUPPLY CIRCUIT SHORT TO GROUND |
| THROTTLE POSITION SENSOR GROUND CIRCUIT OPEN |
| TP SENSOR SIGNAL 1 CIRCUIT SHORT TO TP SENSOR SIGNAL 2 CIRCUIT |
| 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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