Fault Family System: Powertrain (P-Codes) 12 SAE Codes

Throttle Pedal Position Sensor Stop Performance

Diagnostic & Technical Explanation

P2109 (Throttle/Pedal Position Sensor A Minimum Stop Performance) fires when one of the redundant throttle or accelerator pedal position sensor channels does not read the expected voltage at its mechanical end-of-travel stop during the ECM's self-calibration. A pedal or throttle stop that has worn or shifted out of factory position, a sensor track that has drifted with age, and a battery disconnect that cleared a learned calibration without the platform's relearn procedure being performed are the common causes.

These 12 diagnostic trouble codes share one detection mechanism and one repair path, which is why MechanicDB groups them into a single authored fault family rather than repeating the same explanation 12 times.

Codes in this family (12)

Code	Definition	Repair coverage
P2109	Throttle/Pedal Position Sensor A Minimum Stop Performance	3 ranked fixes
P2113	Throttle/Pedal Position Sensor B Minimum Stop Performance	3 ranked fixes
P2114	Throttle/Pedal Position Sensor C Minimum Stop Performance	3 ranked fixes
P2115	Throttle/Pedal Position Sensor D Minimum Stop Performance	3 ranked fixes
P2116	Throttle/Pedal Position Sensor E Minimum Stop Performance	3 ranked fixes
P2117	Throttle/Pedal Position Sensor F Minimum Stop Performance	3 ranked fixes
P2163	Throttle/Pedal Position Sensor A Maximum Stop Performance	3 ranked fixes
P2164	Throttle/Pedal Position Sensor B Maximum Stop Performance	3 ranked fixes
P2165	Throttle/Pedal Position Sensor C Maximum Stop Performance	3 ranked fixes
P2166	Throttle/Pedal Position Sensor D Maximum Stop Performance	3 ranked fixes
P2167	Throttle/Pedal Position Sensor E Maximum Stop Performance	3 ranked fixes
P2168	Throttle/Pedal Position Sensor F Maximum Stop Performance	3 ranked fixes

What this page does not show

This page publishes the fault mechanism and the code index. The licensed dataset adds, for every one of the 15,886 codes, the full authored repair set (56,729 procedures in total) with the fields deliberately withheld here:

Procedures 2..n after the first-listed procedure
Aftermarket parts cost ranges in USD (est_parts_cost_min/max_usd)
Professional labor-hour estimates (est_labor_hours)
Step-by-step diagnostic and repair instructions
Replacement-part mappings and catalog lookups
6,637 manufacturer-specific OEM codes across 32 makes ($149 tier)

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