P2101 on Pontiac
Throttle Actuator "A" Control Motor Circuit Range/Performance
P2101 on Pontiac vehicles indicates throttle actuator "a" control motor circuit range/performance. Au7o has documented this code across 1 Pontiac model — most commonly on G6. This powertrain code means the engine computer commanded the electronic throttle actuator motor to a certain position but the motor did not respond within the expected range. Modern engines use a drive-by-wire throttle, where a motor opens and closes the throttle plate based on signals from the computer rather than a cable. When the actual throttle position disagrees with the commanded position, the computer sets this code, often forcing the vehicle into a reduced-power 'limp' mode to protect the engine. This can cause poor acceleration or stalling and should be addressed promptly. Typical repair costs on Pontiac range from $250 to $500, depending on the specific model and root cause.
Common Causes of P2101
- •Faulty throttle actuator control motor (throttle body)
- •Dirty or carbon-fouled throttle plate causing binding
- •Wiring or connector problems in the throttle actuator circuit
- •Failed throttle position sensor inside the throttle body
- •Poor electrical connection or corroded terminals
- •Faulty engine control module (less common)
P2101 on Pontiac by Model
Pontiac G6(1 issue)
- Reduced Engine Power / throttle limp mode (P2135, P0121, P2101)2006-2010
G6 owners frequently see a 'Reduced Engine Power' message with the car dropping into limp mode, triggered by throttle position sensor voltage-correlation faults. The throttle body's integrated TPS develops dirty or shorting solder points (sometimes attributed to 'tin whiskers') and corrosion at the connector, so the two throttle sensor signals disagree and the ECM cuts power for safety.
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View P2101 across all makes →Frequently Asked Questions
What does P2101 mean on Pontiac?▼
P2101 stands for "Throttle Actuator "A" Control Motor Circuit Range/Performance." This powertrain code means the engine computer commanded the electronic throttle actuator motor to a certain position but the motor did not respond within the expected range. Modern engines use a drive-by-wire throttle, where a motor opens and closes the throttle plate based on signals from the computer rather than a cable. When the actual throttle position disagrees with the commanded position, the computer sets this code, often forcing the vehicle into a reduced-power 'limp' mode to protect the engine. This can cause poor acceleration or stalling and should be addressed promptly. On Pontiac specifically, this code is documented across 1 model.
What causes P2101 on Pontiac vehicles?▼
Common causes on Pontiac: Faulty throttle actuator control motor (throttle body), Dirty or carbon-fouled throttle plate causing binding, Wiring or connector problems in the throttle actuator circuit, Failed throttle position sensor inside the throttle body, Poor electrical connection or corroded terminals. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P2101 on a Pontiac?▼
Repair costs on Pontiac range from $250 to $500, depending on the specific model and root cause.
Which Pontiac models have P2101 documented?▼
Au7o has documented P2101 on 1 Pontiac model: G6.