219

Possible Causes

• •Incorrect calibration/incorrect service part number on ECM
• •Faulty mechanical operation of the throttle
• •Large manifold vacuum leaks
• •Other stored diagnostic trouble codes (DTCs)

Suggested Actions

1. 1Perform On-Board Diagnostic (OBD) System Check
2. 2Diagnose and repair other stored DTC codes first
3. 3Replace ECM with correct service part number
4. 4Correct mechanical operation of the throttle
5. 5Find and correct the large manifold vacuum leak
6. 6Clear DTC information from the ECM using the Diagnostic Service Tool (DST)

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