P2101

Throttle Actuator A Control Motor Circuit Range/Performance

Throttle actuator control Generic OBD-II High

What it means

P2101 means the electronic throttle actuator's control motor isn't moving the throttle plate the way the PCM expects (a range/performance fault). It often puts the car into reduced-power 'limp' mode with an unstable idle. A dirty throttle body is a common trigger, so cleaning and a throttle relearn are the recommended first steps.

High

Can I keep driving? Drive gently — a throttle-actuator performance fault often triggers reduced-power 'limp' mode and an unstable idle; it's usually driveable at low speed but should be fixed before relying on the vehicle.

Real-world scan data

Seen in

1,393

scans in the past year

Found in

0.2%

of scans

0.4%

of scans that found faults

Appears alongside · share of P2101 scans

P2100in 27.9% of scans

P0122in 26.0% of scans

P2118in 23.4% of scans

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

Common symptoms

What you'll notice

Check-engine light on
Reduced engine power / limp mode
Unstable, high, or surging idle
Hesitation or poor throttle response

Common causes

Most likely first

Dirty or carboned throttle bodyLikely
Faulty throttle actuator control motorCommon
Worn or sticking throttle valveCommon
Wiring or connector problems at the throttle bodyLess often
Faulty PCM (rare)Less often

How to diagnose & fix

Work through it in order

Clean the throttle body and perform the throttle relearn/reset — the recommended first step.
Inspect the throttle-body connector and wiring for damage or corrosion.
Check for binding or carbon on the throttle plate.
Test the throttle actuator motor and position sensors.
Replace the throttle body if it fails testing. Clear and re-test.

FAQ

Quick answers

Is it safe to drive with P2101?+

Only cautiously. The car may drop into reduced-power mode and respond poorly to the accelerator, which is unsafe in fast traffic. Get it fixed promptly.

Can I just clear P2101?+

Cleaning the throttle body and resetting often clears it if there's no hard fault. If it returns, the actuator motor or wiring needs attention.

Read & clear P2101 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX