Cause
Faulty engine control module
The engine's main computer. Named by many codes and rarely the fault. Its supply voltage and earths come first, because a module short of voltage misbehaves rather than dying — and records faults naming parts that are perfectly healthy.
Typically specialist work. Needs equipment or training most home workshops do not have.
Some of these codes mean you should stop driving
10 of the 56 codes this can cause indicate a fault where continuing to drive risks damage or is unsafe. Which one you have matters more than the cause does — read the code's own page before deciding.
Codes this can cause (56)
Codes where this is a likely explanation first, rather than merely a possible one.
- P2107 Throttle Actuator A Control Module Processor Likely for this code Stop driving High
- C0073 Delivered Driving Torque Moderate
- C0074 Requested Driving Torque Moderate
- P060C Internal Control Module Main Processor Performance Stop driving High
- P061B Internal Control Module Torque Calculation Performance Stop driving High
- P2102 Throttle Actuator A Control Motor Circuit Low Stop driving High
- P2105 Throttle Actuator Control System — Forced Engine Shutdown Stop driving Critical
- P2108 Throttle Actuator A Control Module Performance Stop driving High
- P2510 Engine Control Module Power Relay Sense Circuit Range/Performance High
- P2610 Engine Control Module Internal Engine Off Timer Performance Moderate
- P2638 Torque Management Feedback Signal A Range/Performance Moderate
- P2642 Torque Management Feedback Signal B Range/Performance Moderate
- P2669 Actuator Supply Voltage B Circuit/Open High
- P2671 Actuator Supply Voltage B Circuit High High
- P2684 Actuator Supply Voltage C Circuit/Open High
- P2686 Actuator Supply Voltage C Circuit High High
- U0100 Lost Communication With Engine Control Module A Stop driving High
- U0107 Lost Communication With Throttle Actuator A Control Module Stop driving High
- U0115 Lost Communication With Engine Control Module B Stop driving High
- U0294 Lost Communication With Powertrain Control Monitor Module High
- U0401 Invalid Data Received From Engine Control Module A High
- U0442 Invalid Data Received From Engine Control Module B High
- P0804 Upshift/Skip Shift Lamp Control Circuit Low
- P2008 Intake Manifold Runner Control Circuit/Open Bank 1 Moderate
- P2011 Intake Manifold Runner Control Circuit/Open Bank 2 Moderate
Information, not instruction
CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.
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.
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