OBD CodesWhat it means
On an electronic throttle a small motor opens and closes the throttle valve. These codes mean the motor is not moving the valve the way the computer commands, or the computer has put the engine into a limited mode because of a throttle fault.
Codes in this group
| Code | Meaning |
|---|---|
| P2100 | Throttle motor circuit open |
| P2101 | Throttle motor not moving as commanded |
| P2102 | Throttle motor circuit signal low |
| P2103 | Throttle motor circuit signal high |
| P2104 | Throttle system forced to idle |
| P2105 | Throttle system forced engine shut-down |
| P2106 | Throttle system forced limited power |
| P2110 | Throttle system forced limited engine speed |
| P2111 | Throttle valve stuck open |
| P2112 | Throttle valve stuck closed |
| P2118 | Throttle motor current out of range |
| P2119 | Throttle body not performing as expected |
Bank 1 is the side of the engine that has cylinder 1. Sensor 1 is before the catalytic converter and sensor 2 is after it. More terms explained.
What you may notice
- Engine power limited, sometimes only idle speed
- High or low idle
- Stalling when coming to a stop
Common causes
Most likely first:
- Carbon build-up making the throttle valve stick
- A failed throttle body motor
- Wiring or connector faults
- Low battery voltage
What to check first
- Check the battery is healthy: weak batteries cause odd throttle faults
- A workshop can clean the throttle body and relearn its positions
- Do not push the throttle plate by hand on an electronic throttle: it can damage the gears
Have a mechanic confirm. A fault code tells you which system reported a problem, not which part has failed. The same code can have several causes, and they differ between car models. Use this page to understand the code, then have a qualified mechanic test the car before any part is replaced.
After the repair
Once the cause is fixed, the code can be cleared with a scan tool, or the warning light goes out by itself after several trips without the fault. Clearing a code without fixing the cause only hides it for a while. More about clearing codes.
Related codes
Mass air flow (MAF) sensor (P0100), Manifold pressure (MAP) and barometric sensor (P0105), Intake air temperature sensor (P0110), Engine coolant temperature sensor (P0115), Thermostat and engine warm-up (P0125), Throttle position sensor (P0120), Accelerator pedal sensor and throttle agreement (P2120), Oxygen sensor before the catalytic converter (sensor 1) (P0130). All codes.
Written in November 2026. These are generic OBD-II codes, the same on all makes. Causes and repair steps differ between models.