DTC 1112

Possible Causes

• •Incorrect ECM calibration (incorrect service part number)
• •Faulty mechanical operation of the throttle
• •Large manifold vacuum leak

Suggested Actions

1. 1Perform On-Board (OBD) System Check
2. 2Diagnose other active DTC codes before proceeding
3. 3Verify ECM service part number and replace ECM with correct service part number if needed
4. 4Correct the mechanical operation of the throttle (Refer to Engine & Component section)
5. 5Inspect engine for and correct large manifold vacuum leaks (Refer to Fuel Systems section)
6. 6Clear DTC information from ECM using Diagnostic Scan Tool (DST), turn ignition OFF for 30 seconds, and test operate vehicle to verify normal operation

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