Cause
Faulty fuel injector control module
The module generating the high voltage some injectors need, separate from the engine module. Because it is a separate unit, its own supply and earth come first — and a fault here silences injectors in groups rather than singly, which distinguishes it from an injector having failed.
Typically specialist work. Needs equipment or training most home workshops do not have.
Some of these codes mean you should stop driving
13 of the 13 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 (13)
Codes where this is a likely explanation first, rather than merely a possible one.
- P2146 Fuel Injector Group A Supply Voltage Circuit/Open Likely for this code Stop driving High
- P2147 Fuel Injector Group A Supply Voltage Circuit Low Likely for this code Stop driving High
- P2149 Fuel Injector Group B Supply Voltage Circuit/Open Likely for this code Stop driving High
- P2150 Fuel Injector Group B Supply Voltage Circuit Low Likely for this code Stop driving High
- P2152 Fuel Injector Group C Supply Voltage Circuit/Open Likely for this code Stop driving High
- P2153 Fuel Injector Group C Supply Voltage Circuit Low Likely for this code Stop driving High
- P2155 Fuel Injector Group D Supply Voltage Circuit/Open Likely for this code Stop driving High
- P2156 Fuel Injector Group D Supply Voltage Circuit Low Likely for this code Stop driving High
- P2148 Fuel Injector Group A Supply Voltage Circuit High Stop driving High
- P2151 Fuel Injector Group B Supply Voltage Circuit High Stop driving High
- P2154 Fuel Injector Group C Supply Voltage Circuit High Stop driving High
- P2157 Fuel Injector Group D Supply Voltage Circuit High Stop driving High
- U0105 Lost Communication With Fuel Injector Control Module Stop driving High
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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