Fault Family System: Powertrain (P-Codes) 11 SAE Codes

Auto Manual Shift Mode Circuit

Diagnostic & Technical Explanation

Code P0949 (Auto Shift Manual Adaptive Learning Not Complete) sets when the TCM sees an open, shorted, or implausible signal from the driver-selectable auto/manual shift-mode gate or paddle switch, or determines the adaptive relearn for manual-shift mode has not completed. Causes are worn switch/gate contacts, a chafed clockspring connection, or an interrupted relearn drive cycle.

These 11 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 11 times.

Codes in this family (11)

Code	Definition	Repair coverage
P0949	Auto Shift Manual Adaptive Learning Not Complete	3 ranked fixes
P0950	Auto Shift Manual Control Circuit	3 ranked fixes
P0951	Auto Shift Manual Control Circuit Range/Performance	3 ranked fixes
P0952	Auto Shift Manual Control Circuit Low	3 ranked fixes
P0953	Auto Shift Manual Control Circuit High	3 ranked fixes
P0954	Auto Shift Manual Control Circuit Intermittent	3 ranked fixes
P0955	Auto Shift Manual Mode Circuit	3 ranked fixes
P0956	Auto Shift Manual Mode Circuit Range/Performance	3 ranked fixes
P0957	Auto Shift Manual Mode Circuit Low	3 ranked fixes
P0958	Auto Shift Manual Mode Circuit High	3 ranked fixes
P0959	Auto Shift Manual Mode Circuit Intermittent	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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