FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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1, 2 and 3 Digit Codes: 29

CODE NUMBER
Scan tool: 29
General scan tool P0120

CODE NAME
Throttle position signal

CODE DESCRIPTION
Throttle angle less than 6 degrees, or throttle greater than 120.6 degrees.
The engine must be running.

PROBABLE CAUSE
- Malfunction of throttle position sensor
- Harness or connector between throttle position sensor and TCM open or short-circuited
- Harness or connector between throttle position sensor output and TCM open or short-circuited
- Malfunction of TCM
- Malfunction of PCM

DIAGNOSTIC CHART