AutoCodes – Mercedes-Benz – P0236 Mercedes-Benz

P0236 Mercedes-Benz Code - Turbocharger/Supercharger Boost Sensor 'A' Circuit Range/Performance

Quick Answer

The boost pressure sensor responds to pressure changes in the intake manifold. Common causes include Boost pressure sensor harness is open or shorted, Boost pressure sensor circuit poor electrical connection, Faulty boost pressure sensor. 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: P0236 Mercedes-Benz indicates Turbocharger/Supercharger Boost Sensor 'A' Circuit Range/Performance.
Common causes: Common causes include Boost pressure sensor harness is open or shorted, Boost pressure sensor circuit poor electrical connection, Faulty boost pressure sensor.
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 23,838

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 Jan 05, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0236 Mercedes-Benz Description

The boost pressure sensor responds to pressure changes in the intake manifold. This pressure is created by the turbocharger and changes with accelerator pedal position (APP) and engine speed. The Engine Control Module (ECM) uses this information to assist in diagnosis of the barometric pressure (BARO) sensor and to provide engine overboost protection. The boost pressure sensor has a 5-volt reference circuit, a low reference circuit, and a signal circuit. The Engine Control Module (ECM) supplies 5 volts to the boost pressure sensor on the 5-volt reference 2 circuit, and provides a ground on a low reference circuit. The boost pressure sensor provides a signal to the ECM on a signal circuit relative to the pressure changes. The ECM monitors the boost pressure sensor signal for voltage outside of the normal range. The ECM calculates a predicted value for the boost pressure sensor. The ECM then compares the predicted value to the actual signal.

OBDII Code P0236 Mercedes-Benz - Turbocharger/Supercharger Boost Sensor 'A' Circuit Range/Performance - AutoCodes.com — P0236 Mercedes-Benz Code - Turbocharger/Supercharger Boost Sensor 'A' Circuit Range/Performance

What does this mean?

What are the Possible Causes of the DTC P0236 Mercedes-Benz?

Boost pressure sensor harness is open or shorted
Boost pressure sensor circuit poor electrical connection
Faulty boost pressure sensor
Faulty Turbo/Super Charger
Engine over temperature
Ignition misfire exceeds the calibrated threshold
Faulty Knock sensor (KS)

How to Fix the DTC P0236 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 P0236 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 P0236 Mercedes-Benz code?

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Need Help with the Code?

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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 P0236 Mercedes-Benz Code

1. What are the common symptoms of OBDII code P0236 in a Mercedes-Benz related to the Turbocharger/Supercharger Boost Sensor 'A' Circuit Range/Performance issue?

Symptoms may include a decrease in engine power, hesitation or surging during acceleration, illuminated Check Engine Light, and potential fuel efficiency reduction.

2. What are the possible causes of OBDII code P0236 in a Mercedes-Benz?

Potential causes include a faulty boost sensor, damaged wiring or connectors in the boost sensor circuit, a vacuum leak in the intake system, or issues with the turbocharger or supercharger itself.

3. How can I diagnose the Turbocharger/Supercharger Boost Sensor 'A' Circuit Range/Performance issue in my Mercedes-Benz?

Diagnosis typically involves using a scan tool to retrieve the OBDII code P0236, checking the boost sensor and its circuit for continuity and proper voltage, inspecting for damaged wiring or connectors, and testing the turbocharger or supercharger for proper operation.

4. Can I continue driving my Mercedes-Benz with OBDII code P0236 triggered?

It is not recommended to continue driving with this code active, as it can lead to further damage to the engine or turbocharger/supercharger system. It is best to address the issue promptly.

5. What are some repair tips for resolving OBDII code P0236 in a Mercedes-Benz?

Repair tips may include replacing the boost sensor, repairing any damaged wiring or connectors, fixing vacuum leaks, ensuring proper turbocharger or supercharger function, and clearing the code with a scan tool.

6. Is it possible to reset OBDII code P0236 in a Mercedes-Benz without fixing the underlying issue?

While you can clear the code temporarily with a scan tool, it will likely return if the root cause is not addressed. It is important to fix the underlying problem to prevent further issues.

7. How much does it typically cost to repair OBDII code P0236 in a Mercedes-Benz?

The cost of repair can vary depending on the specific cause of the issue. It may involve replacing the boost sensor, repairing wiring, or addressing turbocharger/supercharger problems. Costs can range from a few hundred to over a thousand dollars.

8. Can a DIY enthusiast fix OBDII code P0236 in a Mercedes-Benz, or is professional help recommended?

While some enthusiasts with automotive repair experience may be able to diagnose and fix this issue themselves, it is often recommended to seek professional help, especially when dealing with turbocharger or supercharger systems.

9. Are there any preventive measures to avoid triggering OBDII code P0236 in a Mercedes-Benz?

Regular maintenance, such as checking and replacing air filters, inspecting vacuum lines, and ensuring proper turbocharger/supercharger function, can help prevent issues that may lead to triggering this code.

10. How long does it typically take to repair OBDII code P0236 in a Mercedes-Benz?

The repair time can vary depending on the specific cause of the issue and the complexity of the repair. It may take a few hours to a full day to diagnose and fix the Turbocharger/Supercharger Boost Sensor 'A' Circuit Range/Performance problem in a Mercedes-Benz.