AutoCodes – Audi – P1243 Audi

P1243 Audi Code - Injector Circuit Open Cylinder 7

Quick Answer

P1243 Audi indicates Injector Circuit Open Cylinder 7. Common causes include Faulty Fuel Injector 7, Fuel Injector 7 harness is open or shorted, Fuel Injector 7 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: P1243 Audi indicates Injector Circuit Open Cylinder 7.
Common causes: Common causes include Faulty Fuel Injector 7, Fuel Injector 7 harness is open or shorted, Fuel Injector 7 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 2,111

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jul 21, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1243 Audi Description

OBDII Code P1243 Audi - Injector Circuit Open Cylinder 7 - AutoCodes.com — P1243 Audi Code - Injector Circuit Open Cylinder 7

What does this mean?

What are the Possible Causes of the DTC P1243 Audi?

Faulty Fuel Injector 7
Fuel Injector 7 harness is open or shorted
Fuel Injector 7 circuit poor electrical connection

How to Fix the DTC P1243 Audi?

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 P1243 Audi 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 P1243 Audi Code

1. What does the OBDII code P1243 mean for an Audi?

P1243 indicates an open circuit in the fuel injector circuit for cylinder 7, meaning the injector is not receiving the correct electrical signal.

2. What are the common symptoms of code P1243 in an Audi?

Symptoms may include rough idling, misfires, poor fuel efficiency, loss of power, and the check engine light turning on.

3. What causes the P1243 code to appear in an Audi?

Possible causes include a faulty fuel injector, damaged wiring or connectors in the injector circuit, a failed ECM, or corrosion in the electrical connections.

4. Can I drive my Audi with the P1243 code active?

Driving with this code is not recommended as it can lead to engine misfires, reduced performance, and potential engine damage over time.

5. How can I diagnose the P1243 code on my Audi?

Diagnosis involves checking the wiring and connectors for cylinder 7's injector, testing the injector for proper function, and inspecting the ECM for faults.

6. How do I fix the P1243 code on an Audi?

Repairs may include replacing the faulty injector, repairing or replacing damaged wiring or connectors, cleaning corroded connections, or reprogramming or replacing the ECM.

7. What tools are needed to troubleshoot the P1243 code?

You may need an OBDII scanner, a multimeter for electrical testing, and possibly a noid light to check injector pulse.

8. How much does it typically cost to repair the P1243 code?

Repair costs can vary but may range from $150 to $500 depending on whether the injector, wiring, or ECM needs replacement.

9. Can a dirty fuel injector cause the P1243 code on an Audi?

While a dirty injector can cause performance issues, the P1243 code specifically points to an electrical issue, not a mechanical blockage.

10. How can I prevent the P1243 code from recurring?

Regular maintenance, inspecting and cleaning electrical connections, and promptly addressing any injector or wiring issues can help prevent the code from recurring.