AutoCodes – Generic – P1263

P1263 Code - Cylinder #3 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 3, Fuel Injector 3 harness is open or shorted, Fuel Injector 3 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: P1263 indicates Cylinder #3 High To Low Side Short.
Common causes: Common causes include Faulty Fuel Injector 3, Fuel Injector 3 harness is open or shorted, Fuel Injector 3 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 32,703

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 P1263 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 P1263 - Cylinder #3 High To Low Side Short - AutoCodes.com — P1263 Code - Cylinder #3 High To Low Side Short

What does this mean?

What are the Possible Causes of the DTC P1263?

Faulty Fuel Injector 3
Fuel Injector 3 harness is open or shorted
Fuel Injector 3 circuit poor electrical connection
Faulty Fuel Injector Interface Module

How to Fix the DTC P1263?

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 P1263 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 P1263 code?

Need more information on how to fix the P1263 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1263 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1263 Audi — Injector 2 Implausible Signal
P1263 Ford — Cylinder #3 High To Low Side Short
P1263 Jeep — Glow Plug #2 Control Circuit Low
P1263 Mazda — Cylinder #3 High To Low Side Short
P1263 Saab — Throttle Valve Moved Manually While Engine Running
P1263 Volkswagen — Injector 2 Implausible Signal

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 P1263 Code

1. What are the common symptoms of OBDII code P1263 (Cylinder #3 High To Low Side Short)?

- Common symptoms include rough idling, misfires, loss of power, and the illumination of the Check Engine Light.

2. What causes OBDII code P1263 (Cylinder #3 High To Low Side Short)?

- This code is usually triggered by a short circuit in the wiring or connector related to the fuel injector in cylinder #3.

3. How can I diagnose the issue causing OBDII code P1263?

- A thorough inspection of the wiring harness, connectors, and fuel injector in cylinder #3 is necessary. Using a multimeter to check for continuity and shorts can help pinpoint the problem.

4. Can a dirty or clogged fuel injector cause OBDII code P1263?

- Yes, a dirty or clogged fuel injector in cylinder #3 can cause improper electrical resistance and trigger the code.

5. What is the recommended repair for OBDII code P1263?

- The recommended repair involves repairing or replacing the wiring harness, connector, or fuel injector in cylinder #3 as necessary.

6. Is it safe to drive with OBDII code P1263 present?

- It is not recommended to drive with this code present, as it can lead to engine performance issues and potential damage if left unresolved.

7. Can a DIY enthusiast fix OBDII code P1263 at home?

- Depending on the individual's skill level and access to tools, diagnosing and repairing this code at home is possible, but professional help may be needed for complex issues.

8. What are the long-term implications of ignoring OBDII code P1263?

- Ignoring this code can lead to increased fuel consumption, engine damage, and potential safety hazards due to poor engine performance.

9. How much does it typically cost to repair OBDII code P1263 at a mechanic or dealership?

- The cost of repairing this code can vary depending on the extent of the damage, but it generally ranges from $100 to $300 for parts and labor.

10. Can resetting the Check Engine Light clear OBDII code P1263?

- Resetting the Check Engine Light may temporarily clear the code, but it will likely return if the underlying issue causing the code is not addressed.