download Customer Concern: Tests/Procedures: Potential Causes: Tech Tips: Diagnostic Codes: The check engine light is on with a trouble code P1140. 1. Check the right side (passenger side) Intake Valve Timing Control Position (IVTCP) sensor for 12 volts on the Black/White wire. 2. Check the IVTCP sensor for a good ground on the Black wire. [...]
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