P0C1A: Drive Motor B Torque Delivered Performance
What to do
As P0C19 — read it with the other codes, and expect all-wheel drive to be withdrawn.
What this code means
Drive motor B is not delivering the torque it was asked for.
The argument — that this is an outcome code whose causes are usually other codes, and why the response is a cut rather than a derate — is at P0C19. On motor B, expect all-wheel drive to be withdrawn rather than the car stopped.
Likely causes
Start here
- Motor position sensor not calibrated after replacement · moderate
- Faulty power inverter · specialist
Less common
- Faulty motor current sensor · specialist
- Motor winding insulation breakdown · specialist
- Faulty motor position sensor · specialist
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
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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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