AutoFixDB - Free OBD-II diagnostic trouble code lookup. Find causes, symptoms, diagnostic steps and repair solutions.

Overview

P0288 generic OBD-II code indicating low voltage or weak electrical signal in the fuel injector circuit for cylinder 10

Common Symptoms

Check engine light illuminated
Rough idle or engine misfire
Loss of acceleration or power
Increased fuel consumption
Possible stall under load

Most Common Causes

Faulty injector for cylinder 10 high

Injector internal fault or open/short can draw abnormal current and cause low voltage condition

Wiring harness damage or poor connection to injector high

Corroded, frayed or loose wiring/connectors frequently result in low circuit voltage

Faulty injector driver circuit in PCM/ECM medium

Driver transistor degradation or internal PCM fault can reduce voltage to the injector

Insufficient power/ground supply to injector circuit medium

Bad ground or low supply voltage can mimic injector circuit fault

Clogged or mechanically failed injector low

Mechanical blockage may not directly trigger low electrical voltage but contributes to misfire symptoms

Diagnostic Steps

Connect OBD-II scanner and confirm P0288 and any related codes

Expected: Code P0288 present consistently

Interpretation: Verifies the circuit fault is current and not historical
Perform a visual inspection of wiring and connector at injector 10

Expected: No broken, frayed, corroded, or loose connections

Interpretation: Obvious electrical issues often cause low voltage faults
Measure voltage at injector connector with key ON

Expected: Approximately battery voltage (~12V)

Interpretation: Lower voltage indicates wiring or supply issues
Check injector coil resistance and compare to manufacturer spec

Expected: Resistance within spec

Interpretation: Out-of-spec resistance suggests bad injector
Backprobe PCM injector driver output while cranking

Expected: Pulse signal present and proper amplitude

Interpretation: No pulse or weak pulse may indicate PCM driver issue

Repair Solutions

Repair or replace damaged injector wiring/connectors medium

Estimated Cost: $50 - $200

Connector cleaning and wiring repair is common solution

Replace faulty fuel injector medium

Estimated Cost: $150 - $600

Cylinder 10 injector replacement if confirmed defective

Reprogram or replace PCM/ECM injector driver hard

Estimated Cost: $800 - $1500

Only after confirming injector and wiring integrity

Clean and secure fuel injector connector with dielectric grease easy

Estimated Cost: $10 - $50

Prevents future corrosion and poor contact

Common Misdiagnoses

Avoid these common diagnostic mistakes:

Assuming engine mechanical misfire is caused by spark/ignition instead of injector circuit
Replacing fuel injector without verifying wiring or PCM driver function

Frequently Asked Questions

Technical definition of P0288 OBD-II Code

When your OBD-II scanner reads P0288, it means: Cylinder 10 Injector Circuit Low. This code is related to the vehicle's Fuel System.

Is it safe to drive with a P0288 code?

With a severity level of medium, may cause rough running, misfires, reduced power and fuel economy due to inadequate fuel delivery to cylinder 10

What are the symptoms of P0288?

The most typical signs are: Check engine light illuminated, Rough idle or engine misfire, Loss of acceleration or power.

Common triggers for the P0288 error

The most common causes are: Faulty injector for cylinder 10, Wiring harness damage or poor connection to injector, Faulty injector driver circuit in PCM/ECM.

Repair cost breakdown for P0288

It depends on what needs to be fixed. Clean and secure fuel injector connector with dielectric grease repairs are cheaper (~$50), while Reprogram or replace PCM/ECM injector driver repairs are on the higher end (~$1500).

Does code P0288 apply to Jeep vehicles?

P0288 is not specific to any one brand. It can appear on Ford, Dodge, Toyota, Honda, Jeep, and other vehicles.

P0288: Cylinder 10 Injector Circuit Low