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Troubleshooting a vehicle has become much easier since the advent of the On-Board Diagnostic system. The OBD system monitors numerous vehicle sensors and reports any faults to the vehicles computer. When a fault is detected, the problem is recorded as a trouble code in the computer and the Malfunction Indicator Light is illuminated. The Malfunction Indicator Light, also known as the "check engine light," lets you know that a problem has occurred and a trouble code has been stored to help identify the problem.
Step 1
Sit in the drivers seat of your PT Cruiser and insert the key into the ignition switch.
Step 2
Turn the key forward to the run position, back to the accessory position, forward to run, back to accessory, then forward to run; all key turns should be completed in four to five seconds.
Step 3
Make note of any codes that are displayed in the odometer window.
Step 4
Remove the key once all codes have been recorded.
Cross-reference the displayed codes with the list provided on the PT Cruiser Forum website (see References).
Tips
- It may take several tries to get the timing of the key turns right.
- If the odometer displays "Done," no codes are stored in the computer.
