AutoCodes – Mercedes-Benz – P0752 Mercedes-Benz

P0752 Mercedes-Benz Code - Shift Solenoid 'A' Performance or Stuck On

Quick Answer

Shift solenoid valve A 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 'A' 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: P0752 Mercedes-Benz indicates Shift Solenoid 'A' Performance or Stuck On.
Common causes: Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty shift solenoid 'A' 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 3,168

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0752 Mercedes-Benz Description

OBDII Code P0752 Mercedes-Benz - Shift Solenoid 'A' Performance or Stuck On - AutoCodes.com — P0752 Mercedes-Benz Code - Shift Solenoid 'A' Performance or Stuck On

What does this mean?

What are the Possible Causes of the DTC P0752 Mercedes-Benz?

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

How to Fix the DTC P0752 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 P0752 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 P0752 Mercedes-Benz code?

Need more information on how to fix the P0752 Mercedes-Benz code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0752 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 P0752 Mercedes-Benz Code

What does the OBDII code P0752 mean for a Mercedes-Benz?

The code P0752 indicates that shift solenoid 'A' is stuck in the "on" position, causing issues with gear shifting and transmission performance.

What are the common symptoms of P0752 in a Mercedes-Benz?

Symptoms include difficulty shifting gears, transmission slipping, erratic or delayed shifting, and possible activation of the check engine light.

What causes the P0752 code to appear on a Mercedes-Benz?

Common causes include a malfunctioning shift solenoid, contaminated transmission fluid, electrical issues such as damaged wiring or connectors, or internal transmission problems.

Can driving with the P0752 code damage the transmission?

Yes, driving with this code can lead to further transmission damage, as improper shifting can cause excessive wear on internal components.

How can I diagnose the P0752 code on my Mercedes-Benz?

Use an OBDII scanner to confirm the code, then inspect the shift solenoid 'A,' transmission fluid condition, and related wiring for damage or contamination.

Does the P0752 code always mean the shift solenoid is faulty?

No, the code could also be caused by electrical issues, transmission fluid contamination, or internal mechanical problems within the transmission.

How do I fix the P0752 code on my Mercedes-Benz?

Potential fixes include replacing the shift solenoid, flushing and refilling the transmission fluid, repairing damaged wiring, or addressing internal transmission issues.

What should I check first if I get the P0752 code?

Start with inspecting the transmission fluid for contamination or low levels, followed by checking the wiring and connectors to the shift solenoid.

Is replacing the transmission fluid likely to fix the P0752 code?

If the issue is caused by dirty or contaminated transmission fluid, replacing the fluid may resolve the problem. However, if the solenoid is damaged, further repair is needed.

Can a P0752 code be resolved without professional assistance?

While some issues like fluid replacement or inspecting wiring can be done at home, diagnosing and repairing solenoid or internal transmission problems may require professional expertise.