AutoCodes – Audi – P0653 Audi

P0653 Audi Code - Sensor Reference Voltage 'B' Circuit High

Quick Answer

This fault code is stored in the Engine Control Module (ECM) when a malfunction occurs with the sensor supply voltage circuit. Common causes include Faulty Engine Control Module (ECM), Engine Control Module harness is open or shorted, Engine Control Module 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: P0653 Audi indicates Sensor Reference Voltage 'B' Circuit High.
Common causes: Common causes include Faulty Engine Control Module (ECM), Engine Control Module harness is open or shorted, Engine Control Module 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 2,360

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 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0653 Audi Description

This fault code is stored in the Engine Control Module (ECM) when a malfunction occurs with the sensor supply voltage circuit. The Engine Control Module outputs a 5-volt supply voltage to certain sensors. Many components share the same 5-volt supply. If fault codes exist for multiple components that operate with a 5-volt supply the wiring from the Engine Control Module and the Engine Control Module itself should be tested. Also, each component should be disconnected in turn to identify a faulty component pulling down the supply circuit. The Diagnostic Trouble Code (DTC) will set when the Engine Control Module has detected the sensor 5-volt reference circuit voltage is higher than expected.

OBDII Code P0653 Audi - Sensor Reference Voltage 'B' Circuit High - AutoCodes.com — P0653 Audi Code - Sensor Reference Voltage 'B' Circuit High

What does this mean?

What are the Possible Causes of the DTC P0653 Audi?

Faulty Engine Control Module (ECM)
Engine Control Module harness is open or shorted
Engine Control Module circuit poor electrical connection
Shorted sensor on 5 volt circuit

How to Fix the DTC P0653 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 P0653 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 P0653 Audi Code

1. What are the common symptoms of OBDII code P0653 in an Audi?

The common symptoms of OBDII code P0653 in an Audi include illuminated Check Engine Light (CEL), decreased fuel efficiency, engine stalling, and rough idling.

2. What does the OBDII code P0653 Audi indicate?

OBDII code P0653 in an Audi indicates a problem with the Sensor Reference Voltage 'B' Circuit, specifically that the voltage is too high.

3. What are the possible causes of OBDII code P0653 in an Audi?

Possible causes of OBDII code P0653 in an Audi include a faulty sensor, wiring issues, a problem with the Engine Control Module (ECM), or a malfunctioning voltage regulator.

4. How can I diagnose the Sensor Reference Voltage 'B' Circuit high issue in my Audi?

Diagnosing the Sensor Reference Voltage 'B' Circuit high issue in your Audi involves using a diagnostic scanner to read the code, checking the wiring and connections related to the sensor, and testing the sensor itself for proper voltage output.

5. Can I continue driving my Audi with OBDII code P0653?

It is not recommended to continue driving your Audi with OBDII code P0653, as it can lead to potential engine performance issues and further damage if left unaddressed.

6. How can I repair OBDII code P0653 in my Audi?

To repair OBDII code P0653 in your Audi, you may need to replace the faulty sensor, repair any damaged wiring, or address any issues with the ECM or voltage regulator as needed.

7. How much does it cost to fix OBDII code P0653 in an Audi?

The cost to fix OBDII code P0653 in an Audi can vary depending on the specific cause of the issue, the parts needed for repair, and labor costs. It is recommended to get a diagnosis from a professional mechanic for an accurate estimate.

8. Can a DIY enthusiast fix OBDII code P0653 in an Audi?

A DIY enthusiast with the necessary tools and experience may be able to fix OBDII code P0653 in an Audi, especially if the issue is related to simple wiring problems. However, complex issues may require professional assistance.

9. Will resetting the Check Engine Light resolve OBDII code P0653 in my Audi?

Resetting the Check Engine Light may temporarily turn off the warning indicator, but it will not fix the underlying issue causing OBDII code P0653 in your Audi. It is important to diagnose and address the root cause of the problem.

10. How can I prevent OBDII code P0653 from occurring in my Audi in the future?

To prevent OBDII code P0653 from occurring in your Audi in the future, it is important to perform regular vehicle maintenance, address any electrical issues promptly, and use quality components when making repairs or replacements.