U0107: Lost communication with the throttle actuator control module
The engine ECU is not receiving messages from the module that drives the throttle. The car usually drops into limp mode with little power.
| Code | U0107 |
|---|---|
| System | Communication network |
| Group | U01xx, Lost communication with control units |
| Type | Generic: it means the same on every make |
| Can you keep driving? | With care |
What U0107 means
On modern cars the accelerator pedal is not linked to the throttle by a cable: an electric motor opens it as the ECU requests. This code means communication with the module that controls the throttle has been lost. On many cars that control sits inside the engine ECU itself, so the code then points to a network or power fault.
Most common causes
- Low battery or loose terminals
- Blown fuse or relay feeding the module or throttle
- Loose, corroded or oily connector on the throttle body or module
- Damaged network or power wiring near the engine
- Faulty throttle control module or engine ECU
Symptoms
- Engine warning light on
- The car will not rev or accelerates very weakly (limp mode)
- Rough idle or engine stalling
- Sometimes the engine will not start
Can you drive with U0107?
With care You can usually move, but with very little power, which is risky when joining traffic or overtaking. Drive straight to a garage on quiet roads.
Open the bonnetthe in-depth explanation
How to check it
Use the reader to watch throttle opening and pedal position live: if the throttle does not follow the pedal, the garage will know where to start. Also check battery voltage with the engine running (13.5 to 14.7 V is normal).
How to read and clear U0107 with Final OBD
Plug an OBD2 scanner in under the steering wheel, switch the ignition on and open Final OBD. Under Faults you’ll see U0107 with its description and whether it’s confirmed, pending or permanent.
If the engine stores it over standard OBD, with FREE you read this code with its explanation for nothing and clear it. With PRO you also read the faults of every control unit and clear them in all of them.
Clearing the code only turns the light off: if the cause is still there, it comes back. Clear it once it’s fixed, and not right before an inspection. It’s all in how to read and clear fault codes and in inspections and OBD.
Similar codes
- U0103 Lost communication with the gear shift module
- U0104 Lost communication with the cruise control module
- U0105 The fuel injector control unit is not answering on the car network
- U0106 The glow plug control unit is not answering on the car network
- U0108 The alternative fuel control unit is not answering on the car network
- U0109 The fuel pump control unit is not answering on the car network
- U010A The exhaust gas recirculation control unit A is not answering on the car network
- U010B The exhaust gas recirculation control unit B is not answering on the car network
- U0100 Lost communication with engine control module (ECM/PCM A)
- U0101 Lost communication with transmission control module (TCM)
- U0102 Lost communication with transfer case control module
- U0121 Lost communication with the ABS control module
What does code U0107 mean?
On modern cars the accelerator pedal is not linked to the throttle by a cable: an electric motor opens it as the ECU requests. This code means communication with the module that controls the throttle has been lost. On many cars that control sits inside the engine ECU itself, so the code then points to a network or power fault.
Can you drive with U0107?
You can usually move, but with very little power, which is risky when joining traffic or overtaking. Drive straight to a garage on quiet roads.
How do you clear U0107?
With an OBD2 scanner and an app like Final OBD, which clears it for free if it’s stored by the engine control unit. But clearing it only turns the light off: if the cause isn’t fixed, U0107 comes back.
Read it on your car
Final OBD reads and clears engine faults through standard OBD for free, each one explained in plain English. With PRO it also reads the faults of every control unit, each make’s own codes included, and clears them in all of them.
