U0107

Lost Communication With Throttle Actuator Control Module

Car Fault Codes Network

Can you still drive? With care, short trips only

Who can fix it? Needs a workshop

Typical repair time 30 minutes – 4 hours

Typical cost SAR 100 to 5,000

What it means

Another module has stopped receiving messages from the throttle actuator control module over the network. This module opens the electronic throttle according to the accelerator pedal, and when communication is lost the engine usually enters limp mode with limited power. The cause is usually module power, its connector or the bus wiring, and several U codes together point to a bus or battery problem.

Symptoms5

Severe loss of power and engine in limp mode.
No or limited response to the accelerator pedal.
High or fixed idle speed.
Check engine light or electronic throttle control light on.
Engine stalling in some cases.

Possible causes6

Weak battery or low voltage.
Blown module power fuse or faulty relay.
Loose or corroded connector at the module or the throttle body.
Poor module ground.
Open or shorted communication wiring to the module.
Internal module failure.

How to diagnose5

Read codes from all modules; if many modules report lost communication, start with the battery and the bus, and if only the throttle actuator control module is missing, focus on it.
Try to communicate with the throttle actuator control module directly with a scan tool; no response points to lost power, ground or wiring to it.
Locate the throttle actuator control module from the manufacturer information, which on most modern vehicles is part of the engine computer, and is a separate module only on some makes and models, then check its power fuse and measure power and ground at its connector.
Inspect the module connector for water, corrosion or loose terminals, and check the bus wiring to it.
Disconnect the battery and measure resistance between the CAN bus wires at the module connector, comparing with the manufacturer specification to find an open or short.

How to fix6

Charge or replace the battery, and clean and tighten its terminals.
Replace the blown fuse after finding why it blew.
Clean the module connector and repair the ground or damaged bus wiring.
Update the module software if the manufacturer has an update.
Replace the throttle actuator control module if proven faulty with good power and bus wiring, then program and code it to the vehicle.
Clear codes in all modules and confirm the code does not return.

Repair cost

0–500

500–2,000

2,000–5,000

5,000+

In Saudi riyals; the highlighted part is the expected range for this fault.

The cost is low for a battery, fuse or connector, rises with wiring repairs, and is highest if the module, or the engine computer it is built into, must be replaced and programmed.

Prices are rough estimates for common cars at independent workshops and vary with the car and the source of the part.
Prices last updated: September 2026

Frequently asked questions

Why is the car so weak with this code?

Throttle opening control is lost, so the computer limits power for safety and only allows slow driving to a workshop.

Is cleaning the throttle body enough?

No. Cleaning fixes dirt, not lost communication. This code means the module's messages are not arriving, so check power, connectors and wiring.

Can I drive with this code?

Only with caution for a short distance, because power is limited and you may not be able to accelerate when needed, such as when merging onto a highway.

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This guide is for information only and does not replace an inspection by a qualified technician. If the fault involves brakes, steering, engine temperature, electrics or refrigerant, do not attempt the repair yourself.

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