P2118 fault code: what it means

P2118: Throttle actuator motor current range/performance. Limp mode is common.

Engine and gearbox (powertrain) · Costly if missed

Usual causes, most likely first

sticking or dirty throttle body
failed throttle motor
wiring or fuse fault

P2118 by make

Honda

Throttle actuator current range/performance problem. Limp mode possible.

Usual causes: throttle body motor; wiring fault

Hyundai

Diesel throttle (intake flap) actuator motor current range/performance.

Usual causes: carboned throttle flap; failed actuator; wiring

Kia

Diesel throttle (intake flap) actuator motor current range/performance.

Usual causes: carboned throttle flap; failed actuator; wiring

Lexus

Throttle actuator motor current range/performance on a Lexus. Limp mode with low power.

Usual causes: sticking or dirty throttle body; failed throttle motor; ETCS fuse or wiring fault

Mazda

On SKYACTIV-D this is intake shutter valve control duty stuck at 90 %: the valve is not moving as commanded. EGR and DPF regeneration are inhibited.

Usual causes: intake shutter valve sticking (carbon); intake shutter position sensor; wiring fault

Nissan

Electronic throttle control motor current fault (short). Throttle goes into limp mode with very limited power.

Usual causes: throttle control motor shorted (throttle body); wiring shorted

Toyota

Throttle actuator control motor current range/performance: the electronic throttle motor is drawing abnormal current. Engine goes into limp mode.

Usual causes: sticking or dirty throttle body; failed throttle motor; ETCS fuse or wiring fault

What the repair usually costs

Automatic transmission rebuild, 6-speed and up (sent to specialist)NZ$7,190–NZ$13,080 · A$6,190–A$11,830
DSG / dual-clutch mechatronic unit replacement (new or reman)NZ$4,300–NZ$7,160 · A$3,750–A$6,390
DSG mechatronic repair / rebuild (unit sent to specialist)NZ$2,070–NZ$4,800 · A$1,890–A$4,250
Throttle body clean and idle relearnNZ$90–NZ$190 · A$100–A$200

Not sure what P2118 means on your car? Ask Credov.

Before you clear it

Write the code down or photograph the scanner first. A code that comes straight back after clearing points to a fault that is still there. A car whose codes were cleared just before you arrived may be hiding one: the scanner's readiness monitors show "not ready" for a while after codes are cleared.

Researched by Credov from manufacturer and workshop sources. A fault code points to where a fault may be; a workshop confirms it with a diagnosis. Browse all fault codes.