AutoCodes – Mercedes-Benz – P0772 Mercedes-Benz

P0772 Mercedes-Benz Code - Shift Solenoid 'E' Stuck On

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: P0772 Mercedes-Benz indicates Shift Solenoid 'E' Stuck On.
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 3,518

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 14, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0772 Mercedes-Benz Description

OBDII Code P0772 Mercedes-Benz - Shift Solenoid 'E' Stuck On - AutoCodes.com — P0772 Mercedes-Benz Code - Shift Solenoid 'E' Stuck On

What does this mean?

What are the Possible Causes of the DTC P0772 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 P0772 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 does this mean?

Code Tech Notes

When the a transmission solenoid is stuck on, in most cases the problem is not the electrical part of the solenoid; the problem is foreign material obstructing the mechanical function of the solenoid or the flow of the fluid through the transmission valve body. If the transmission fluid is very dirty, it is recommend changing the transmission fluid and if possible removing the transmission pan for further diagnosis. Excessive debris or metal particles on the transmission pan could be an indication that there is a transmission mechanical failure and that the transmission will need to be rebuilt or replaced.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0772 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 P0772 Mercedes-Benz code?

Need more information on how to fix the P0772 Mercedes-Benz code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0772 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 P0772 Mercedes-Benz Code

1. What does the OBDII code P0772 mean on a Mercedes-Benz?

P0772 indicates that the transmission shift solenoid "E" is stuck in the "on" position, causing issues with gear shifting or transmission performance.

2. What are the common symptoms of code P0772 in a Mercedes-Benz?

Symptoms may include harsh or delayed shifting, being stuck in one gear, transmission slipping, poor fuel economy, or the vehicle entering limp mode.

3. What causes the P0772 code in Mercedes-Benz vehicles?

Common causes include a faulty shift solenoid, low or contaminated transmission fluid, wiring issues, or a malfunctioning transmission control module (TCM).

4. Can driving with code P0772 damage the transmission?

Yes, prolonged driving with this code can cause further damage to the transmission due to improper fluid flow and gear engagement.

5. How do I diagnose the P0772 code on my Mercedes-Benz?

Start by checking the transmission fluid condition and level, inspecting wiring and connectors, and testing the functionality of the shift solenoid and TCM.

6. How much does it cost to repair the P0772 code on a Mercedes-Benz?

Repair costs vary but may range from $150-$400 for a shift solenoid replacement, plus labor. Additional costs may apply if wiring or TCM repairs are needed.

7. Can low transmission fluid cause the P0772 code?

Yes, low or contaminated transmission fluid can lead to improper solenoid operation and trigger the P0772 code.

8. How do I reset the P0772 code on my Mercedes-Benz?

After repairs, you can reset the code using an OBDII scanner. However, resetting without addressing the root cause may cause the code to return.

9. Is the P0772 code specific to Mercedes-Benz vehicles?

No, P0772 is a generic OBDII code and can appear on other vehicles, but specific diagnostic and repair steps may vary by make and model.

10. Can a bad transmission control module (TCM) cause the P0772 code?

Yes, a malfunctioning TCM can fail to properly control the shift solenoids, potentially triggering the P0772 code.

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