P2154

Fuel Injector Group C Supply Voltage Circuit High

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Unstable engine operation
Increased fuel consumption
Power Loss
Check Engine light comes on
Possible misfires

Causes

Damaged wiring or poor contact in the injector circuit
Faulty relay or fuse
Problems with the engine control module (ECM)
Short circuit in the injector circuit
Malfunction of the injector itself

How to Fix

Check the condition of fuses and relays
Inspect wiring and connectors for damage
Check the voltage at the injectors using a multimeter
Check injector resistance
If necessary, replace injectors or repair wiring

Related codes

P2151 P2152 P2153