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.
2007 Chrysler Crossfire Base, 2D ConvertibleFACTORY OEM SERVICE PROCEDURE
P0221-Idle Speed Performance: Notes
- When Monitored : With the engine running.
- Set Condition : Low limit: The Powertrain Control Module (PCM) required engine RPM must be reached within 25 seconds. The fault is set if the engine RPM is less than the PCM required RPM by 100 RPM or more after 25 seconds. High limit: The PCM required engine RPM must be reached within 25 seconds. The fault is set if the engine RPM is greater than the PCM required RPM by 200 RPM or more after 25 seconds.
| Possible Causes |
|---|
| AIR INTAKE SYSTEM |
| VACUUM LEAKS |
| THROTTLE BODY OPERATION |
| POWERTRAIN CONTROL MODULE |
For a complete Powertrain Control Module Circuit Diagram, refer to SCHEMATICS AND DIAGRAMS .
Factory Service Tools
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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.