P2107: Throttle Actuator A Control Module Processor
Do not keep driving
The car will be restricted or will not run properly. Before accepting a module replacement, ask for the module's supply, grounds and connector to be checked — those produce internal faults in modules that are otherwise fine, and they are a very different bill.
What this code means
The module's internal check of its own throttle control processing has failed. Drive-by-wire modules run their throttle logic on monitored hardware — commonly a second processor whose only job is to watch the first and shut the throttle down if it disagrees — precisely because there is no cable to fall back on.
This code is that watchdog reporting. Unlike most codes in the corpus it genuinely does implicate the module, and there is not much diagnostic ground between the code and that conclusion.
Two things worth eliminating first, because both produce internal faults in a module that is otherwise sound: a poor supply or ground, and water ingress. The corpus makes the supply argument at length under P0562 and P0882 and it applies here — a module short of clean voltage misbehaves rather than dying, and its self-checks are among the first things to fail.
Likely causes
Start here
- Faulty engine control module · specialist
- Poor module ground connection · moderate
Less common
- Low system voltage · moderate
- Water ingress into the module connector · moderate
- Corroded or loose connector · easy
Symptoms
Components involved
Information, not instruction
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Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
Community experience
Be the first to write this up
Nothing posted about this yet. Whatever you found is worth writing down — even a dead end saves someone the same afternoon.
What makes one worth reading:
- The car — make, model, year and engine. The same fault behaves differently on each.
- What you measured, not only what you replaced.
- What actually fixed it — or that nothing did, which is worth knowing too.
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