P2106 — Throttle Actuator Control System - Forced Limited Power

P2106 — Throttle Actuator Control System - Forced Limited Power. A fault in the throttle and intake air metering. Short, gentle driving to a shop is usually possible. Typical causes: faulty throttle position sensor or pedal sensor, wiring or connector faults in the throttle circuit, contaminated or failed MAF/MAP sensor.

powertrain (engine/transmission)

Is it safe to drive?

Drive with caution Drive with caution. Many throttle faults put the car into limp mode with limited power — enough to reach a shop, not for highway trips. If the engine stalls or the pedal stops responding, do not drive.

How to diagnose with an OBD scanner

Read the code and freeze frame Connect an OBD2 scanner, confirm P2106 is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
Check for companion codes and TSBs Related codes often reveal the real root cause. Also check manufacturer technical service bulletins (TSB) for your make and model — many P0xxx issues have factory fixes or software updates. Search by VIN on the manufacturer site or nhtsa.gov.
Inspect wiring and connectors Visually inspect the wiring harness and connectors related to the throttle and intake air metering for damage, corrosion, chafing or poor contact.
Subsystem check Inspect and clean the throttle body; check that the plate moves freely.
Subsystem check Watch throttle position and MAF/MAP readings in live data while pressing the pedal — values should change smoothly.
Verify the repair Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P2106 does not return.

Approximate repair cost

Repair cost depends on which component actually failed. Typical scenarios for P2106 (parts and labor, USD, independent shop rates): Replace the throttle body assembly: $250–$700; Replace the MAF or MAP sensor: $150–$400; Clean the throttle body: $80–$200. Overall, fixing P2106 usually costs between $80 and $700. An accurate diagnosis before buying parts saves money — the most expensive scenario is rarely the first one to check.

Common questions

Will P2106 clear itself?

Sometimes P2106 clears after a few drive cycles if the fault was intermittent — for example a loose connector or a tank of bad fuel. The underlying cause usually remains, so the code tends to return. Clear it once; if it comes back, diagnose rather than erase it repeatedly.

How do I diagnose P2106 myself?

Start with a scan: confirm P2106, save the freeze frame and note any companion codes. Then inspect the wiring and connectors related to the throttle and intake air metering, and verify the suspect component against live data before buying parts.

Is it safe to drive with P2106?

Drive with caution. Many throttle faults put the car into limp mode with limited power — enough to reach a shop, not for highway trips. If the engine stalls or the pedal stops responding, do not drive.

What are the symptoms of P2106?

Drivers most often notice: unstable or high idle, Check Engine Light on, poor throttle response, limp-home mode with reduced power.

What does OBD2 code P2106 mean?

What does P2106 mean?

P2106 is logged by the onboard diagnostics when the throttle and intake air metering does not behave as expected. The official definition is “Throttle Actuator Control System - Forced Limited Power”. This is a powertrain (engine/transmission) category code.

To set P2106, the control module compares live readings of the throttle and intake air metering against calibrated limits, usually over several drive cycles. Alongside the code it stores a freeze frame — a snapshot of rpm, load, coolant temperature and vehicle speed at the moment of failure. Reading that snapshot first saves diagnostic time.

Common symptoms of P2106

unstable or high idle
Check Engine Light on
poor throttle response
limp-home mode with reduced power
stalling when coming to a stop

What causes P2106?

wiring or connector faults in the throttle circuit
dirty throttle body or stuck throttle plate
failed electronic throttle motor
faulty throttle position sensor or pedal sensor
contaminated or failed MAF/MAP sensor
intake air leaks after the MAF sensor

How to diagnose P2106

Connect an OBD2 scanner, confirm P2106 is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
Related codes often reveal the real root cause. Also check manufacturer technical service bulletins (TSB) for your make and model — many P0xxx issues have factory fixes or software updates. Search by VIN on the manufacturer site or nhtsa.gov.
Visually inspect the wiring harness and connectors related to the throttle and intake air metering for damage, corrosion, chafing or poor contact.
Inspect and clean the throttle body; check that the plate moves freely.
Watch throttle position and MAF/MAP readings in live data while pressing the pedal — values should change smoothly.
Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P2106 does not return.

How to fix P2106

Start with the cheapest and most common causes before replacing expensive parts:

Replace the throttle body assembly — $250–$700
Replace the MAF or MAP sensor — $150–$400
Clean the throttle body — $80–$200

How much does it cost to fix P2106?

Repair cost depends on which component actually failed. Typical scenarios for P2106 (parts and labor, USD, independent shop rates):

Replace the throttle body assembly: $250–$700
Replace the MAF or MAP sensor: $150–$400
Clean the throttle body: $80–$200

Overall, fixing P2106 usually costs between $80 and $700. An accurate diagnosis before buying parts saves money — the most expensive scenario is rarely the first one to check.