P2157

Fuel Injector Group D Supply Voltage Circuit High

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–89 (est.)

Symptoms

Unstable engine operation
Power dips during acceleration
Increased fuel consumption
Check Engine Light Illuminates
Possible misfires in group D cylinders

Causes

Short circuit of injector circuit to positive
Faulty injector power relay
Problems with the injector wiring harness
Engine control unit malfunction
Corroded or damaged contacts in the circuit

How to Fix

Check the integrity of the wiring harness of group D injectors
Measure the voltage in the injector power supply circuit
Check the operation of the injector power relay
Inspect connectors and contacts for corrosion
Replace damaged components if necessary

Related codes

P2158 P2159 P0261