AutoCodes – Mercedes-Benz – P0770 Mercedes-Benz

P0770 Mercedes-Benz Code - Shift Solenoid 'E' Malfunction

Quick Answer

Shift solenoid valve 'E' 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 'E' 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: P0770 Mercedes-Benz indicates Shift Solenoid 'E' Malfunction.
Common causes: Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty shift solenoid 'E' 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 3,482

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 P0770 Mercedes-Benz Description

OBDII Code P0770 Mercedes-Benz - Shift Solenoid 'E' Malfunction - AutoCodes.com — P0770 Mercedes-Benz Code - Shift Solenoid 'E' Malfunction

What does this mean?

What are the Possible Causes of the DTC P0770 Mercedes-Benz?

Low transmission fluid level
Dirty transmission fluid
Faulty shift solenoid 'E' valve
Shift solenoid 'E' valve harness is open or shorted
Shift solenoid 'E' valve circuit poor electrical connection

How to Fix the DTC P0770 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 P0770 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 P0770 Mercedes-Benz code?

Need more information on how to fix the P0770 Mercedes-Benz code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0770 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 P0770 Mercedes-Benz Code

1. What does the OBDII code P0770 mean on a Mercedes-Benz?

P0770 indicates a malfunction in Shift Solenoid 'E,' which controls the flow of transmission fluid for gear changes. It suggests an issue with the solenoid or related components.

2. What are the common symptoms of a P0770 code in a Mercedes-Benz?

Symptoms include rough or delayed shifting, transmission slipping, reduced fuel efficiency, or the vehicle being stuck in one gear.

3. What causes the P0770 code to appear in a Mercedes-Benz?

Common causes include a faulty shift solenoid 'E,' dirty or low transmission fluid, a damaged transmission valve body, or electrical issues like wiring or connector problems.

4. Can I continue driving my Mercedes-Benz with a P0770 code?

While the vehicle may still be drivable, ignoring this code can lead to further transmission damage and higher repair costs. Itâ€™s best to address it promptly.

5. How do you diagnose a P0770 code in a Mercedes-Benz?

Diagnosis involves scanning the vehicle with an OBDII tool, checking the transmission fluid condition, inspecting wiring and connectors, and testing the shift solenoid for proper operation.

6. How do I fix the P0770 code on my Mercedes-Benz?

Repairs may include replacing the faulty shift solenoid, cleaning or flushing the transmission fluid, repairing damaged wiring, or replacing the transmission control module (TCM) if necessary.

7. How much does it cost to repair a P0770 code in a Mercedes-Benz?

Costs vary but can range from $200 to $500 for solenoid replacement. More extensive repairs, such as valve body or TCM replacement, may cost upwards of $1,000.

8. Can dirty transmission fluid cause the P0770 code?

Yes, dirty or contaminated transmission fluid can restrict solenoid operation and trigger the P0770 code. A transmission fluid flush may resolve the issue.

9. What tools are needed to troubleshoot the P0770 code?

Basic tools include an OBDII scanner, a multimeter for electrical testing, and possibly a transmission pressure gauge to assess fluid flow.

10. Is the P0770 code specific to Mercedes-Benz vehicles?

No, P0770 is a generic OBDII code applicable to many vehicles, but the exact troubleshooting steps and repairs may vary depending on the make and model.