AutoCodes – Audi – P1502 Audi

P1502 Audi Code - Fuel Pump Relay Circuit Short To Positive

Quick Answer

The Engine Control Module (ECM) monitors the Fuel Pump Relay Electrical Circuit. Common causes include Faulty Fuel Pump Relay, Fuel Pump Relay harness is open or shorted, Fuel Pump Relay 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
P1502 Audi indicates Fuel Pump Relay Circuit Short To Positive.
Common causes
Common causes include Faulty Fuel Pump Relay, Fuel Pump Relay harness is open or shorted, Fuel Pump Relay 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 5,946
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 24, 2021
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Code P1502 Audi Description

The Engine Control Module (ECM) monitors the Fuel Pump Relay Electrical Circuit. The ECM sets the OBDII code when the Fuel Pump Relay Electrical Circuit is not to factory specifications.
OBDII Code P1502 Audi - Fuel Pump Relay Circuit Short To Positive - AutoCodes.com
P1502 Audi Code - Fuel Pump Relay Circuit Short To Positive

What are the Possible Causes of the DTC P1502 Audi?

  • Faulty Fuel Pump Relay
  • Fuel Pump Relay harness is open or shorted
  • Fuel Pump Relay poor electrical connection

How to Fix the DTC P1502 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 P1502 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.

Need more information about the P1502 Audi code?

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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 P1502 Audi Code

1. What does the OBDII code P1502 mean on an Audi?

P1502 indicates a "Fuel Pump Relay Circuit Short To Positive," meaning there's an electrical issue where the fuel pump relay circuit is shorted to a positive voltage source.

2. What are the common symptoms of the P1502 code on an Audi?

Symptoms may include difficulty starting the engine, stalling while driving, poor engine performance, or the fuel pump not functioning.

3. What causes the P1502 code on an Audi?

Common causes include a faulty fuel pump relay, damaged or shorted wiring in the fuel pump circuit, a defective fuel pump, or a malfunctioning engine control module (ECM).

4. Can I drive my Audi with the P1502 code present?

Driving with the P1502 code is not recommended, as it can cause engine stalling and leave you stranded, potentially leading to unsafe driving conditions.

5. How do I diagnose the P1502 code on my Audi?

Diagnosis involves checking the fuel pump relay, inspecting the wiring for shorts or damage, testing the fuel pump's functionality, and verifying the ECM's operation.

6. How can I fix the P1502 code on an Audi?

Repairs may include replacing the fuel pump relay, repairing or replacing damaged wiring, replacing the fuel pump, or reprogramming or replacing the ECM if necessary.

7. How much does it cost to repair the P1502 code on an Audi?

Repair costs vary but may range from $100 to $400 for minor fixes like a relay or wiring repair. Replacing a fuel pump or ECM can cost significantly more.

8. Can a bad fuel pump trigger the P1502 code?

Yes, a faulty fuel pump that draws excessive current or has an internal short can trigger the P1502 code.

9. Will clearing the code with a scan tool fix the P1502 issue?

Clearing the code without addressing the underlying issue will not fix the problem, and the code is likely to return.

10. Is the P1502 code specific to Audi vehicles?

While the P1502 code is commonly associated with Audi vehicles, its meaning and diagnostic steps may vary slightly depending on the make and model.

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