P2157
Fuel Injector Group D Supply Voltage Circuit High
P2157 is an OBD-II diagnostic trouble code meaning: Fuel Injector Group D Supply Voltage Circuit High. Common causes: short circuit of injector circuit to positive, faulty injector power relay. Estimated repair cost: $17–89.
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
Error P2157 by Vehicle Brand
FAQ
What does the P2157 code mean?
P2157 is an OBD-II diagnostic trouble code that indicates: Fuel Injector Group D Supply Voltage Circuit High
What causes a P2157 error code?
The most common causes of P2157 include: Short circuit of injector circuit to positive; Faulty injector power relay; Problems with the injector wiring harness; Engine control unit malfunction.
How do I fix a P2157 diagnostic trouble code?
To fix P2157: 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. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2157?
Limited driving only, diagnose soon
How much does it cost to fix P2157?
The estimated repair cost for P2157 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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