P2108 code meaning
Throttle Actuator A Control Module Performance
Powertrain system Generic code P21xx codes Check engine light
What P2108 means
P2108 marks a performance problem of the control function for throttle A, as opposed to a pure processor fault (P2107). VW's 2014 Touareg data book gives a concrete case: the time for the throttle to close below a reference point of 11.56 percent must not exceed 0.60 s. Ford's 2024-2025 summary uses P2108 as the base code for its throttle processor test, so P2107 there appears as P2108 with failure-type byte 49 (60 ms, MIL). Usage therefore differs by maker. Check the throttle body for deposits and the ECU for software updates, then supply and grounds. Symptoms range from a warning lamp to reduced power. The B counterpart is P211F; mechanical return problems also show up as P2119.
P2108 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2108
- Engine warning lamp on
- Reduced power or limp mode
- Unstable idle after lifting off the pedal
Common causes of P2108
- Most likelyThrottle closes too slowly (deposits, weak spring)
- PossibleECU software issue needing an update
- Less likelySupply voltage or ground problem at the ECU
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
ECM
What each part of P2108 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 1 | Area: fuel and air metering. |
| 08 | The exact fault in that area. |
What to do next
- Note P2108 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P2108
What does P2108 mean?
P2108 means "Throttle Actuator A Control Module Performance". P2108 marks a performance problem of the control function for throttle A, as opposed to a pure processor fault (P2107). It is a generic code, so it means the same on every make.
Is it safe to drive with P2108?
Drive gently and only to a workshop. With P2108 the car can go into limp mode (reduced power) to protect itself.
Will P2108 fail an emissions test?
Yes, it can. P2108 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P2108 to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P2108 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.