What causes fault code P0276?

• Most likely: Faulty fuel injector (internal short in solenoid) • Likely: Damaged wiring harness (short to ground on signal/supply wire) • Possible: Poor electrical connection or corrosion at the injector connector • Rare: Internal Engine Control Module (ECM/PCM) fault

How do you fix fault code P0276?

STEP 1: Visually inspect the connector for injector 6. Look for corrosion, bent pins, or damaged wires. STEP 2: Perform a resistance test on the injector (unplug the connector). A normal value is typically between 11–18 Ohms (check factory specs). If the value is near 0 Ohms, the injector is shorted. STEP 3: Check for 12V power supply with ignition on. Also, test the wiring for a short to ground using a multimeter (continuity to chassis). STEP 4: Use an oscilloscope to monitor the injector pulse (Duty Cycle) while running to verify ECM driver operation. STEP 5: If the injector is faulty, replace the component and clear the fault codes.

Powertrain (Engine & Gearbox)Standard EOBD

P0276 - Cylinder 6 Injector Circuit Low

Q: What are the symptoms of fault code P0276?

• Check Engine Light (MIL) illuminated • Engine hesitation or misfire • Reduced engine power and poor acceleration • Increased fuel consumption • Vehicle may fail emissions testing

Last updated:1 February 2026

Related:Fuel Injector Cylinder 6, Engine Control Module (ECM), Kablage och kontaktstycken, Fuel Rail

System

Powertrain (Engine & Gearbox)

Related Fault Codes

P0200

Injector Circuit Malfunction

P0201

Cylinder 1 Injector Circuit Open

P0202

Injector Circuit - Cylinder 2 - Malfunction

P0203

Injector Circuit - Cylinder 3

Technical Description

P0276 indicates that the Engine Control Module (ECM) has detected an unexpectedly low voltage condition in the control circuit for the fuel injector of cylinder number 6. The fuel injector is a solenoid valve opened by the ECM by grounding the circuit (Low Side Control). The ECM monitors the voltage drop across the power supply and the solenoid. If the voltage remains low when the injector should be closed, or if current draw is out of range, the ECM interprets this as a short to ground or a defective solenoid within the power feed chain. Peak-and-hold current monitoring is used to verify injector performance.

Possible Causes

Faulty fuel injector (internal short in solenoid)

Damaged wiring harness (short to ground on signal/supply wire)

Poor electrical connection or corrosion at the injector connector

Internal Engine Control Module (ECM/PCM) fault

Symptoms

Check Engine Light (MIL) illuminated

Engine hesitation or misfire

Reduced engine power and poor acceleration

Increased fuel consumption

Vehicle may fail emissions testing

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P0276 - Cylinder 6 Injector Circuit Low

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P0276 - Cylinder 6 Injector Circuit Low

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