AutoCodes – Generic – P0653

P0653 Code - 5 Volt Sensor Reference 2 Circuit High

Quick Answer

The control module has 2 internal 5-volt reference buses called "5-volt reference 1" and"5-volt reference 2". Common causes include Faulty Engine Control Module (ECM), ECM harness is open or shorted, ECM 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 indicates 5 Volt Sensor Reference 2 Circuit High.
Common causes: Common causes include Faulty Engine Control Module (ECM), ECM harness is open or shorted, ECM 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 9,159

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 Jun 27, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0653 Description

The control module has 2 internal 5-volt reference buses called "5-volt reference 1" and"5-volt reference 2". Each reference bus provided 5-volt reference circuit for more than one sensor. Therefore, a fault condition on one 5-volt reference circuit will affect the other 5-volt reference circuits connected to the reference bus. The control module monitors the voltage on the 5-volt reference buses.

OBDII Code P0653 - 5 Volt Sensor Reference 2 Circuit High - AutoCodes.com — P0653 Code - 5 Volt Sensor Reference 2 Circuit High

What does this mean?

What are the Possible Causes of the DTC P0653?

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

How to Fix the DTC P0653?

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 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 P0653 code?

Need more information on how to fix the P0653 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0653 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P0653 Audi — Sensor Reference Voltage 'B' Circuit High
P0653 Buick — 5 Volt Reference 2 Circuit High Voltage
P0653 Cadillac — 5 Volt Reference 2 Circuit High Voltage
P0653 Chevrolet — 5 Volt Reference 2 Circuit High Voltage
P0653 Chrysler — 5 Volt Sensor Reference 2 Circuit High
P0653 Dodge — 5 Volt Sensor Reference 2 Circuit High
P0653 GMC — 5 Volt Reference 2 Circuit High Voltage
P0653 Hyundai — Sensor Reference Voltage 'B' Circuit High
P0653 Isuzu — 5 Volt Reference 2 Circuit High Voltage
P0653 Jeep — 5 Volt Sensor Reference 2 Circuit High
P0653 KIA — Sensor Reference Voltage 'B' Circuit High
P0653 Mitsubishi — Sensor Reference Voltage 'B' Circuit High
P0653 Suzuki — 5 Volt Reference 2 Circuit High Voltage
P0653 Volkswagen — Sensor Reference Voltage 'B' Circuit High

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 Code

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

The common symptoms of OBDII code P0653 (5 Volt Sensor Reference 2 Circuit High) include illuminated Check Engine Light (CEL), decreased fuel efficiency, rough idling, and potential loss of engine power.

2. What does the OBDII code P0653 indicate?

OBDII code P0653 indicates that the Engine Control Module (ECM) has detected a high voltage condition in the 5 Volt Sensor Reference 2 Circuit, which provides a reference voltage for various sensors in the vehicle.

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

Possible causes of OBDII code P0653 include a faulty sensor, damaged wiring or connectors in the 5 Volt Sensor Reference 2 Circuit, a malfunctioning ECM, or a short circuit in the system.

4. How can I diagnose OBDII code P0653?

Diagnosing OBDII code P0653 involves using an OBDII scanner to retrieve the code, checking the sensor and circuit for any visible damage, testing the voltage output of the sensor, and inspecting the wiring and connectors for continuity.

5. Can I drive my vehicle with OBDII code P0653?

It is not recommended to drive your vehicle with OBDII code P0653, as it can lead to potential engine performance issues and further damage if left unresolved. It is best to address the issue promptly.

6. How can OBDII code P0653 be repaired?

Repairing OBDII code P0653 typically involves replacing the faulty sensor, repairing any damaged wiring or connectors, resetting the ECM, and clearing the trouble code using an OBDII scanner.

7. Is OBDII code P0653 a serious issue?

While OBDII code P0653 may not cause immediate harm to your vehicle, it can affect engine performance and fuel efficiency over time. It is best to address the issue promptly to prevent further complications.

8. Can a DIY enthusiast fix OBDII code P0653?

Depending on your level of automotive knowledge and experience, you may be able to diagnose and repair OBDII code P0653 yourself. However, it is recommended to seek professional help if you are unsure about the repair process.

9. Will OBDII code P0653 cause my vehicle to fail an emissions test?

OBDII code P0653 can potentially cause your vehicle to fail an emissions test, as it indicates a malfunction in the sensor reference circuit. It is advisable to address the issue before undergoing an emissions test.

10. How much does it cost to repair OBDII code P0653?

The cost of repairing OBDII code P0653 can vary depending on the extent of the issue, the parts needed for replacement, and labor costs. It is advisable to obtain quotes from automotive repair shops for an accurate estimate.