P0268Fuel & Air Metering

Cylinder 3 Injector Circuit High

P0268 means the ECM detected a high voltage condition in the cylinder 3 injector circuit. Common causes are an open circuit, a short to voltage, a failed injector, or wiring problems.

🚗 Risky. An injector circuit fault on cylinder 3 causes a misfire and can harm the catalytic converter. Diagnose promptly.

HIGH

severity

🎯 Top Causes, Ranked by Likelihood

#1Open or short to voltage in wiring$50-$300

40%

A break or short to power raises circuit voltage.

#2Failed cylinder 3 injector$100-$500

30%

An open injector coil.

#3ECM injector driver fault$200-$1000

15%

A failed driver for cylinder 3.

🩺 Common Symptoms

Check engine light
Cylinder 3 misfire
Rough running
Loss of power
Poor fuel economy

💰 Repair Cost: DIY vs Shop

DIY Cost

$50-$500

Shop Cost

$150-$1000

📋 Free OBD2 Code Cheat Sheet

The 50 most common codes with likely cause and DIY fix cost. Sent once, no spam.

🔧 How to Diagnose P0268

1Inspect the cylinder 3 injector wiring for opens

2Measure injector 3 coil resistance

3Swap injector to another cylinder to test

4Test the injector 3 driver circuit

❓ Frequently Asked Questions

Can I drive with P0268?

Only briefly. An injector fault causes a misfire and can harm the catalytic converter. Diagnose promptly.

What is the most common cause of P0268?

An open or short to voltage in the wiring, or a failed injector, are the most common causes.

How much does P0268 cost to fix?

Wiring repairs are cheap; an injector often runs $100-$500 including labor.

🔗 Related Codes

P0267P0203P0262P0271