The throttle motor is not drawing the current the ECU expects. Usually the motor itself or its supply.
P2102 — also written P21O2, P 2102, 2102 — is the OBD-II code for throttle actuator control motor circuit low. Same code, same fix: this page covers every spelling of it.
P2102 is a engine fault code, typically costing £90–£550 to put right in a UK garage.
What causes P2102?
- Failed throttle body motor
- Blown fuse or broken supply wire
- Corroded throttle connector
- Carbon jamming the throttle plate
How P2102 is fixed
- Clean the throttle body and carry out an adaptation reset
- Test the motor's supply and resistance
- Replace the throttle body and code it if required
P2102 repair cost in the UK
Most P2102 repairs land between £90–£550 including parts and labour. The spread is wide because the cheap fix (a sensor, a hose, a leak) and the expensive fix (a major component) throw the same code — which is why a proper diagnosis before parts are bought saves the most money.
Can you drive with P2102?
Expect limp mode with very limited power. Recover if it will not accelerate safely.
Urgency: high.