Error code
OBD2 P2156
OBD2P2156
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 Low.
Severity
moderateCan drive but may experience reduced performance and increased emissions.
Summary
P2156 indicates that there is a low supply voltage issue in the fuel injector group D circuit, which affects the engine's performance.
Common Causes
- Wiring short to ground
- Engine control (EC) relay failure
- Faulty fuel injector
Fixes
- Repair or replace faulty wiring, relay, or fuel injectors.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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