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

Throttle Actuator Motor Circuit

Diagnostic & Technical Explanation

P2100 (Throttle Actuator A Control Motor Circuit/Open) is set when the drive-by-wire throttle actuator motor's control circuit reports an open winding, a short, an out-of-range current draw, or the throttle plate's measured position that does not track the commanded motor current. Carbon and oil-vapor buildup on the throttle bore increasing motor load, a worn brush-type motor drawing excess current, and a corroded connector at the throttle body are the leading physical 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
P2100	Throttle Actuator A Control Motor Circuit/Open	4 ranked fixes
P2101	Throttle Actuator A Control Motor Circuit Range/Performance	4 ranked fixes
P2102	Throttle Actuator A Control Motor Circuit Low	4 ranked fixes
P2103	Throttle Actuator A Control Motor Circuit High	4 ranked fixes
P210A	Throttle Actuator B Control Motor Circuit/Open	4 ranked fixes
P210B	Throttle Actuator B Control Motor Circuit Range/Performance	4 ranked fixes
P210C	Throttle Actuator B Control Motor Circuit Low	4 ranked fixes
P210D	Throttle Actuator B Control Motor Circuit High	4 ranked fixes
P2118	Throttle Actuator A Control Motor Current Range/Performance	4 ranked fixes
P2119	Throttle Actuator A Control Throttle Body Range/Performance	4 ranked fixes
P211C	Throttle Actuator B Control Motor Current Range/Performance	4 ranked fixes
P211D	Throttle Actuator B Control Throttle Body Range/Performance	4 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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