AutoCodes – Generic – P1265

P1265 Code - Cylinder #5 High To Low Side Short

Quick Answer

The fuel injectors are connected to the high-pressure fuel rail and deliver a calibrated amount of fuel directly into the combustion chamber. Common causes include Faulty Fuel Injector 5, Fuel Injector 5 harness is open or shorted, Fuel Injector 5 circuit poor electrical connection. 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: P1265 indicates Cylinder #5 High To Low Side Short.
Common causes: Common causes include Faulty Fuel Injector 5, Fuel Injector 5 harness is open or shorted, Fuel Injector 5 circuit poor electrical connection.
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 18,304

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 02, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1265 Description

The fuel injectors are connected to the high-pressure fuel rail and deliver a calibrated amount of fuel directly into the combustion chamber. The piezo actuator is commanded on by the PCM during the main injection stage for approximately 0-400 microseconds. The fuel injectors on and off time are controlled by the piezo actuator device which allows extreme precision during the injection cycle. The Diagnostic Trouble Code (DTC) is detected by the Fuel Injector Interface Module in the secondary (rearward) fuel injector circuit.

OBDII Code P1265 - Cylinder #5 High To Low Side Short - AutoCodes.com — P1265 Code - Cylinder #5 High To Low Side Short

What does this mean?

What are the Possible Causes of the DTC P1265?

Faulty Fuel Injector 5
Fuel Injector 5 harness is open or shorted
Fuel Injector 5 circuit poor electrical connection
Faulty Fuel Injector Interface Module

How to Fix the DTC P1265?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1265 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 P1265 code?

Need more information on how to fix the P1265 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1265 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1265 Audi — Injector 2 Control Limit Not Reached
P1265 Ford — Cylinder #5 High To Low Side Short
P1265 Jeep — Glow Plug #3 Control Circuit Low
P1265 Mazda — Cylinder #5 High To Low Side Short
P1265 Volkswagen — Injector 2 Control Limit Not Reached

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 P1265 Code

1. What are the common symptoms of OBDII code P1265 (Cylinder #5 High To Low Side Short)?

- Common symptoms include rough idling, engine misfires, poor acceleration, and potentially reduced fuel efficiency.

2. What can cause the OBDII code P1265 to trigger?

- This code is typically triggered by a short circuit between the high and low sides in the fuel injector circuit of cylinder #5.

3. How can I diagnose the cause of OBDII code P1265?

- Diagnosing the issue involves checking the wiring harness, connectors, and fuel injector for any signs of damage or a short circuit.

4. Is it safe to continue driving with OBDII code P1265 present?

- It is not recommended to continue driving with this code present, as it can lead to further engine damage or performance issues.

5. Can a DIY enthusiast repair OBDII code P1265?

- While some experienced DIY enthusiasts may be able to address this issue, it is often best handled by a professional mechanic due to the complexity of diagnosing and repairing electrical issues.

6. What are the potential consequences of ignoring OBDII code P1265?

- Ignoring this code can lead to more severe engine problems, such as catalytic converter damage, decreased engine performance, and potential safety hazards.

7. How much does it typically cost to repair OBDII code P1265?

- The cost of repairing this code can vary depending on the extent of the damage and the specific repairs needed, but it may range from $150 to $500 or more.

8. Are there any preventive measures to avoid OBDII code P1265 in the future?

- Regular maintenance, such as checking and replacing worn wiring harnesses or connectors, can help prevent issues that may trigger this code.

9. Can weather conditions affect the likelihood of OBDII code P1265 occurring?

- Extreme weather conditions, such as high humidity or temperature changes, can sometimes contribute to electrical issues that may trigger this code.

10. How long does it typically take to repair OBDII code P1265?

- The repair time can vary depending on the specific cause and the availability of parts, but it may take a few hours to a full day for a mechanic to diagnose and fix the issue.