Error code
OBD2 P2157
OBD2P2157
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Fuel Injector Group 'D' Supply Voltage Circuit High.
Severity
moderateCan drive, but performance issues may occur.
Summary
P2157 indicates that the supply voltage circuit for fuel injector group D is too high, which can affect engine performance. This issue typically involves wiring or electrical components related to this specific bank of injectors.
Common Causes
- Wiring short to positive
- Engine control (EC) relay failure
- Faulty fuel injector in group D
Fixes
- Repair or replace faulty wiring and/or relay.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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