MechanicDB
Fault Family System: Powertrain (P-Codes) 32 SAE Codes

Shift Fork Position Sensor

Diagnostic & Technical Explanation
Code P2831 (Shift Fork A Position Circuit) sets when the TCM sees an open, shorted, implausible, or intermittent signal from a shift fork position sensor (forks A through E) inside a dual-clutch or automated manual transmission, an incorrect indicated neutral position, or a correlation mismatch between paired fork sensors. Causes are a worn sensor track from constant fork motion, metallic debris in the transmission fluid interfering with the magnetic sensor, or a connector fault at the mechatronic unit.

These 32 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 32 times.

Codes in this family (32)

CodeDefinitionRepair coverage
P2831Shift Fork A Position Circuit3 ranked fixes
P2832Shift Fork A Position Circuit Range/Performance3 ranked fixes
P2833Shift Fork A Position Circuit Low3 ranked fixes
P2834Shift Fork A Position Circuit High3 ranked fixes
P2835Shift Fork A Position Circuit Intermittent3 ranked fixes
P2836Shift Fork B Position Circuit3 ranked fixes
P2837Shift Fork B Position Circuit Range/Performance3 ranked fixes
P2838Shift Fork B Position Circuit Low3 ranked fixes
P2839Shift Fork B Position Circuit High3 ranked fixes
P283AShift Fork B Position Circuit Intermittent3 ranked fixes
P283BShift Fork C Position Circuit3 ranked fixes
P283CShift Fork C Position Circuit Range/Performance3 ranked fixes
P283DShift Fork C Position Circuit Low3 ranked fixes
P283EShift Fork C Position Circuit High3 ranked fixes
P283FShift Fork C Position Circuit Intermittent3 ranked fixes
P2840Shift Fork D Position Circuit3 ranked fixes
P2841Shift Fork D Position Circuit Range/Performance3 ranked fixes
P2842Shift Fork D Position Circuit Low3 ranked fixes
P2843Shift Fork D Position Circuit High3 ranked fixes
P2844Shift Fork D Position Circuit Intermittent3 ranked fixes
P2845Shift Fork A Position Sensor Incorrect Neutral Position Indicated3 ranked fixes
P2846Shift Fork B Position Sensor Incorrect Neutral Position Indicated3 ranked fixes
P2847Shift Fork C Position Sensor Incorrect Neutral Position Indicated3 ranked fixes
P2848Shift Fork D Position Sensor Incorrect Neutral Position Indicated3 ranked fixes
P2851Shift Fork Position Sensor A/B Correlation3 ranked fixes
P2852Shift Fork Position Sensor C/D Correlation3 ranked fixes
P2863Shift Fork E Position Circuit3 ranked fixes
P2864Shift Fork E Position Circuit Range/Performance3 ranked fixes
P2865Shift Fork E Position Circuit Low3 ranked fixes
P2866Shift Fork E Position Circuit High3 ranked fixes
P2867Shift Fork E Position Circuit Intermittent3 ranked fixes
P2868Shift Fork E Position Sensor Incorrect Neutral Position Indicated3 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: