AutoCodesCadillac – P0264 Cadillac

P0264 Cadillac Code - Cylinder 2 Injector Control Circuit Low 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 2, Faulty Fuel Injector 2, Plugged Fuel Injector 2. 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
P0264 Cadillac indicates Cylinder 2 Injector Control Circuit Low Voltage.
Common causes
Common causes include Dirty Fuel Injector 2, Faulty Fuel Injector 2, Plugged Fuel Injector 2.
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 362
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 23, 2024
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Code P0264 Cadillac 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 ground for greater than 2 s.
OBDII Code P0264 Cadillac - Cylinder 2 Injector Control Circuit Low Voltage - AutoCodes.com
P0264 Cadillac Code - Cylinder 2 Injector Control Circuit Low Voltage

What are the Possible Causes of the DTC P0264 Cadillac?

  • Dirty Fuel Injector 2
  • Faulty Fuel Injector 2
  • Plugged Fuel Injector 2
  • Fuel Injector #2 harness is open or shorted
  • Fuel Injector #2 circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P0264 Cadillac?

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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0264 Cadillac 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.

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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 P0264 Cadillac Code

1. What does the OBDII code P0264 mean on a Cadillac?

P0264 indicates a low voltage issue in the control circuit for the fuel injector on cylinder 2.

2. What are the common symptoms of the P0264 code in a Cadillac?

Symptoms may include rough idling, engine misfires, reduced fuel efficiency, and a lit check engine light.

3. What causes the P0264 code to appear on a Cadillac?

Common causes include a faulty fuel injector, damaged wiring or connectors, a bad injector driver in the PCM, or corrosion in the circuit.

4. Can I drive my Cadillac with the P0264 code?

While driving may still be possible, it’s not recommended as it can lead to further engine damage or poor performance.

5. How do you diagnose a P0264 code on a Cadillac?

A technician will inspect the wiring and connectors for damage, test the cylinder 2 fuel injector, and check the PCM for faults.

6. What repairs can fix the P0264 code in a Cadillac?

Repairs might include replacing the cylinder 2 fuel injector, repairing or replacing damaged wiring, or reprogramming/replacing the PCM.

7. Can a dirty fuel injector cause the P0264 code?

Yes, a clogged or dirty injector can disrupt the circuit and trigger the code.

8. How much does it cost to fix the P0264 code on a Cadillac?

Repair costs can range from $150 to $500 or more depending on whether the issue is with the injector, wiring, or PCM.

9. Will clearing the P0264 code make it go away permanently?

Clearing the code will only reset the warning temporarily; the underlying issue needs to be resolved to prevent it from returning.

10. How can I prevent the P0264 code from occurring in my Cadillac?

Regular maintenance, such as cleaning the fuel injectors and inspecting wiring for damage, can help prevent this issue.

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