AutoCodes – BMW – P0647 BMW

P0647 BMW Code - Air Conditioning Clutch Relay Circuit High

Quick Answer

A/C clutch relay may also be referred to as A/C compressor clutch relay. Common causes include Faulty Air Conditioning Clutch Relay, Air Conditioning Clutch Relay harness is open or shorted, Air Conditioning Clutch Relay circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: P0647 BMW indicates Air Conditioning Clutch Relay Circuit High.
Common causes: Common causes include Faulty Air Conditioning Clutch Relay, Air Conditioning Clutch Relay harness is open or shorted, Air Conditioning Clutch Relay circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 3,790

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0647 BMW Description

A/C clutch relay may also be referred to as A/C compressor clutch relay. A/C clutch relay circuit is monitored when ignition is on and battery voltage is greater than 10.4 volts.

OBDII Code P0647 BMW - Air Conditioning Clutch Relay Circuit High - AutoCodes.com — P0647 BMW Code - Air Conditioning Clutch Relay Circuit High

What does this mean?

What are the Possible Causes of the DTC P0647 BMW?

Faulty Air Conditioning Clutch Relay
Air Conditioning Clutch Relay harness is open or shorted
Air Conditioning Clutch Relay circuit poor electrical connection

How to Fix the DTC P0647 BMW?

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 P0647 BMW 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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Need more information on how to fix the P0647 BMW code? Get Access to Factory Service Manuals

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Get the P0647 BMW code diagnosed by a professional: Find a repair shop in your area

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 P0647 BMW Code

1. What does the OBDII code P0647 mean on a BMW?

P0647 indicates an issue with the Air Conditioning Clutch Relay Circuit, specifically that the circuit voltage is higher than expected.

2. What are the common symptoms of a P0647 code on a BMW?

Typical symptoms include the air conditioning not functioning, the A/C compressor not engaging, or the Check Engine Light being illuminated.

3. What causes the P0647 code to appear on a BMW?

Common causes include a faulty A/C clutch relay, damaged wiring or connectors in the relay circuit, a malfunctioning A/C compressor, or a failing powertrain control module (PCM).

4. Can I still drive my BMW with a P0647 code?

Yes, you can drive with a P0647 code, but your air conditioning may not work, and ignoring the issue could lead to further electrical problems.

5. How do I diagnose the P0647 code on my BMW?

Start by checking the A/C clutch relay and its wiring for damage or corrosion. Use a multimeter to test for proper voltage and continuity in the circuit.

6. How do I fix the P0647 code on a BMW?

Repairs may include replacing the A/C clutch relay, repairing damaged wires or connectors, or in rare cases, replacing the PCM if it's faulty.

7. How much does it cost to fix a P0647 code on a BMW?

The cost can vary, but replacing an A/C clutch relay typically costs between $20 and $60, while labor charges or more extensive repairs could increase the total.

8. Can a bad A/C compressor cause the P0647 code?

Yes, a malfunctioning A/C compressor can sometimes overload the circuit, leading to a P0647 code.

9. Will resetting the code fix the P0647 issue on a BMW?

Resetting the code may temporarily clear it, but the underlying problem must be addressed to prevent the code from returning.

10. Can a blown fuse trigger the P0647 code on a BMW?

While a blown fuse itself won't directly trigger this code, it can cause related circuit issues that may lead to the P0647 code. Inspect fuses as part of your diagnosis.