AutoCodes – Mercedes-Benz – P0759 Mercedes-Benz

P0759 Mercedes-Benz Code - Shift Solenoid 'B' Intermittent

Quick Answer

Shift solenoid valve 'B' is turned ON or OFF by the Transmission Control Module (TCM) in response to signals sent from the park/neutral position (PNP) switch, vehicle speed and Engine Control Module (ECM) (throttle opening). Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty shift solenoid 'B' valve. 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: P0759 Mercedes-Benz indicates Shift Solenoid 'B' Intermittent.
Common causes: Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty shift solenoid 'B' valve.
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 3,254

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 May 08, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0759 Mercedes-Benz Description

OBDII Code P0759 Mercedes-Benz - Shift Solenoid 'B' Intermittent - AutoCodes.com — P0759 Mercedes-Benz Code - Shift Solenoid 'B' Intermittent

What does this mean?

What are the Possible Causes of the DTC P0759 Mercedes-Benz?

Low transmission fluid level
Dirty transmission fluid
Faulty shift solenoid 'B' valve
Shift solenoid 'B' valve harness or connectors
Shift solenoid 'B' valve circuit is open or shorted

How to Fix the DTC P0759 Mercedes-Benz?

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 P0759 Mercedes-Benz 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 P0759 Mercedes-Benz code?

Need more information on how to fix the P0759 Mercedes-Benz code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0759 Mercedes-Benz 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 P0759 Mercedes-Benz Code

1. What does the OBDII code P0759 mean in a Mercedes-Benz?

P0759 indicates an issue with Shift Solenoid 'B,' specifically an intermittent fault in its electrical or mechanical operation.

2. What are the common symptoms of P0759 in a Mercedes-Benz?

Common symptoms include harsh or delayed shifting, failure to shift gears, a lit check engine light, and reduced fuel efficiency.

3. What causes the P0759 code in a Mercedes-Benz?

Causes can include a faulty shift solenoid 'B,' low transmission fluid, wiring or connector issues, or a malfunctioning transmission control module (TCM).

4. How do I diagnose the P0759 code in my Mercedes-Benz?

Diagnosis may involve checking the transmission fluid level, inspecting wiring and connectors, testing the shift solenoid, and using a scan tool to monitor TCM signals.

5. Can I drive my Mercedes-Benz with the P0759 code?

Driving with this code is not recommended as it can lead to further transmission damage and unsafe driving conditions.

6. How do I fix the P0759 code in my Mercedes-Benz?

Repairs may include replacing the shift solenoid 'B,' repairing or replacing damaged wiring, refilling or flushing the transmission fluid, or replacing the TCM if necessary.

7. What is the cost to fix the P0759 code on a Mercedes-Benz?

The repair cost can range from $200 to $1,000, depending on whether the issue is with the solenoid, wiring, or transmission control module.

8. Can low transmission fluid cause the P0759 code?

Yes, low or contaminated transmission fluid can cause the shift solenoid to malfunction and trigger this code.

9. Do I need to replace the transmission for a P0759 code?

In most cases, a full transmission replacement is unnecessary. The issue is often isolated to the solenoid or related components.

10. How can I prevent the P0759 code from occurring again?

Regular transmission maintenance, including fluid checks and timely repairs of wiring or electrical issues, can help prevent this code from recurring.