AutoCodes – Mercedes-Benz – P0552 Mercedes-Benz

P0552 Mercedes-Benz Code - Power Steering Pressure Sensor Circuit Low Input

Quick Answer

Power steering pressure (PSP) sensor is installed to the power steering high-pressure tube and detects a power steering load. Common causes include Faulty Power Steering Pressure Sensor, Power Steering Pressure Sensor harness is open or shorted, Power Steering Pressure Sensor circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means: P0552 Mercedes-Benz indicates Power Steering Pressure Sensor Circuit Low Input.
Common causes: Common causes include Faulty Power Steering Pressure Sensor, Power Steering Pressure Sensor harness is open or shorted, Power Steering Pressure Sensor circuit poor electrical connection.
Severity: Moderate - service should be scheduled soon.
Can I drive?: The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

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Code Popularity 3,144

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 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 P0552 Mercedes-Benz Description

Power steering pressure (PSP) sensor is installed to the power steering high-pressure tube and detects a power steering load. This sensor is a potentiometer which transforms the power steering load into output voltage, and emits the voltage signal to the Engine Control Module (ECM). The ECM controls the electric throttle control actuator and adjusts the throttle valve opening angle to increase the engine speed and adjusts the idle speed for the increased load.

OBDII Code P0552 Mercedes-Benz - Power Steering Pressure Sensor Circuit Low Input - AutoCodes.com — P0552 Mercedes-Benz Code - Power Steering Pressure Sensor Circuit Low Input

What does this mean?

What are the Possible Causes of the DTC P0552 Mercedes-Benz?

Faulty Power Steering Pressure Sensor
Power Steering Pressure Sensor harness is open or shorted
Power Steering Pressure Sensor circuit poor electrical connection

How to Fix the DTC P0552 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 P0552 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 P0552 Mercedes-Benz code?

Need more information on how to fix the P0552 Mercedes-Benz code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0552 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 P0552 Mercedes-Benz Code

1. What are the common symptoms of OBDII code P0552 in a Mercedes-Benz related to the power steering pressure sensor circuit low input?

The common symptoms include hard or stiff steering, intermittent power steering assistance, and the power steering warning light illuminating on the dashboard.

2. What are the possible causes of OBDII code P0552 in a Mercedes-Benz indicating a low input in the power steering pressure sensor circuit?

Possible causes include a faulty power steering pressure sensor, damaged wiring or connectors in the circuit, low power steering fluid levels, or a malfunctioning power steering pump.

3. How can I diagnose the power steering pressure sensor circuit low input issue in my Mercedes-Benz when OBDII code P0552 is triggered?

You can diagnose the issue by visually inspecting the wiring and connectors for any damage, checking the power steering fluid level, testing the power steering pressure sensor, and using a diagnostic scanner to monitor sensor readings.

4. Is it safe to continue driving my Mercedes-Benz with OBDII code P0552 indicating a problem with the power steering pressure sensor circuit?

It is not recommended to continue driving the vehicle as the power steering assistance may be compromised, leading to potential safety hazards. It is advisable to address the issue promptly to avoid further damage.

5. Can I repair the power steering pressure sensor circuit low input issue in my Mercedes-Benz myself?

Depending on your skill level and access to tools, you may be able to repair the issue yourself by replacing the power steering pressure sensor, repairing any damaged wiring or connectors, or topping up the power steering fluid. However, for complex repairs, it is recommended to seek professional help.

6. How much does it typically cost to repair OBDII code P0552 in a Mercedes-Benz related to the power steering pressure sensor circuit low input?

The cost of repair can vary depending on the root cause of the issue, parts needed, and labor costs. It is advisable to consult with a qualified mechanic or dealership for an accurate estimate.

7. Will resetting the OBDII code P0552 in my Mercedes-Benz temporarily fix the power steering pressure sensor circuit low input issue?

Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to reappear. It is important to diagnose and repair the root cause to prevent further problems.

8. Are there any preventive maintenance tips to avoid encountering OBDII code P0552 in a Mercedes-Benz due to power steering pressure sensor circuit low input?

Regularly checking and maintaining the power steering system, including fluid levels and sensor connections, can help prevent issues like P0552. Promptly addressing any steering-related symptoms can also help catch potential problems early.

9. Can extreme weather conditions or driving habits contribute to triggering OBDII code P0552 in a Mercedes-Benz related to the power steering pressure sensor circuit low input?

Yes, extreme weather conditions, such as cold temperatures affecting fluid viscosity, or aggressive driving habits that strain the power steering system, can contribute to triggering the code. Maintaining proper driving practices and monitoring fluid levels in varying conditions can help mitigate these factors.

10. Is OBDII code P0552 in a Mercedes-Benz indicating a low input in the power steering pressure sensor circuit a common issue among these vehicles?

While not extremely common, issues with the power steering pressure sensor circuit leading to code P0552 can occur in Mercedes-Benz vehicles, especially as they age or if maintenance is neglected. Regular inspections and maintenance can help prevent such issues from arising.