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AutoCodes – Chevrolet – P0280 Chevrolet

P0280 Chevrolet Code - Cylinder 7 Injector Control Circuit High Voltage

Quick Answer

The Engine Control Module (ECM) supplies voltage to each Fuel Injector on the high control circuits. Common causes include Dirty Fuel Injector 7, Faulty Fuel Injector 7, Plugged Fuel Injector 7. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0280 Chevrolet indicates Cylinder 7 Injector Control Circuit High Voltage.
Common causes
Common causes include Dirty Fuel Injector 7, Faulty Fuel Injector 7, Plugged Fuel Injector 7.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code Popularity 582
How popular is this code, among other codes? Low
What is this?
Table of contents Created and updated by William Orellana on Mar 23, 2024
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Code P0280 Chevrolet Description

The Engine Control Module (ECM) supplies voltage to each Fuel Injector on the high control circuits. The ECM energizes each fuel injector by grounding the low control circuit of the fuel injector. The ECM monitors the status of the fuel injector circuits. When a fuel injector circuit condition is detected by the ECM, the affected fuel injector(s) is disabled. The Diagnostic Trouble Code (DTC) will be set when the ECM detects the fuel injector control circuit is shorted to voltage for greater than 2 s.
OBDII Code P0280 Chevrolet - Cylinder 7 Injector Control Circuit High Voltage - AutoCodes.com
P0280 Chevrolet Code - Cylinder 7 Injector Control Circuit High Voltage
What does this mean?

What are the Possible Causes of the DTC P0280 Chevrolet?

  • Dirty Fuel Injector 7
  • Faulty Fuel Injector 7
  • Plugged Fuel Injector 7
  • Fuel injector 7 harness is open or shorted
  • Fuel injector 7 circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P0280 Chevrolet?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

A clogged or partially clogged fuel injector can cause this code. Start by performing an injector flush before replacing the injector.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0280 Chevrolet code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0280 Chevrolet code?

Need more information on how to fix the P0280 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0280 Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0280 Chevrolet Code

1. What does the OBDII code P0280 mean on a Chevrolet?

P0280 indicates a problem with the Cylinder 7 Injector Control Circuit, specifically detecting a high voltage issue.

2. What are the common symptoms of code P0280 in a Chevrolet?

Symptoms may include rough idling, poor engine performance, reduced fuel efficiency, misfires, or the Check Engine Light being illuminated.

3. What causes the P0280 code to appear on a Chevrolet?

Common causes include a faulty fuel injector, damaged wiring or connectors in the injector circuit, a malfunctioning ECM/PCM, or short circuits.

4. Can I drive my Chevrolet with the P0280 code active?

Driving with this code is not recommended as it can lead to poor performance, increased emissions, and potential engine damage.

5. How do I diagnose the P0280 code on a Chevrolet?

Diagnosis involves inspecting the injector wiring and connectors for damage, testing the fuel injector, and checking for proper voltage and resistance in the circuit.

6. How can I fix the P0280 code on a Chevrolet?

Repairs may include replacing a faulty injector, repairing damaged wiring or connectors, or reprogramming or replacing the ECM/PCM.

7. How much does it typically cost to fix the P0280 code on a Chevrolet?

Repair costs can range from $150 to $500 or more, depending on whether the issue is a simple wiring repair or injector replacement.

8. Could a dirty fuel injector cause the P0280 code on a Chevrolet?

While uncommon, a dirty or clogged injector might contribute to circuit issues. Cleaning the injector could resolve the problem if no electrical faults are present.

9. What tools are needed to troubleshoot the P0280 code on a Chevrolet?

You’ll need a scan tool, multimeter, and possibly a noid light to test the injector circuit and components.

10. Can a bad PCM cause the P0280 code on a Chevrolet?

Yes, a malfunctioning PCM can cause incorrect voltage regulation in the injector circuit, leading to the P0280 code.

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