AutoCodesMercedes-Benz – P201C Mercedes-Benz

P201C Mercedes-Benz Code - Intake Manifold Runner Control Actuator Supply Voltage Low Bank 2

Quick Answer

The variable geometry intake manifold is used to alter airflow into the manifold under certain conditions. Common causes include Faulty Intake Manifold Runner Control Actuator, Intake Manifold Runner Control Actuator harness is open or shorted, Intake Manifold Runner Control Actuator circuit poor electrical connection. 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
P201C Mercedes-Benz indicates Intake Manifold Runner Control Actuator Supply Voltage Low Bank 2.
Common causes
Common causes include Faulty Intake Manifold Runner Control Actuator, Intake Manifold Runner Control Actuator harness is open or shorted, Intake Manifold Runner Control Actuator circuit poor electrical connection.
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 1,447
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Oct 21, 2023
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Code P201C Mercedes-Benz Description

The variable geometry intake manifold is used to alter airflow into the manifold under certain conditions. Under low load conditions, a long thin manifold runner is ideal for flow velocity and swirl/turbulence. Under high load demands a short think runner is ideal. The rate of intake swirl and turbulence is critical to fuel mixture formation and agitation. A position sensor can be fixed to the control circuit to monitor the valve for both electrical and mechanical faults. An actuator test can be performed to test the circuit and live data, or an oscilloscope can be used to validate the position feedback.
OBDII Code P201C Mercedes-Benz - Intake Manifold Runner Control Actuator Supply Voltage Low Bank 2 - AutoCodes.com
P201C Mercedes-Benz Code - Intake Manifold Runner Control Actuator Supply Voltage Low Bank 2

What are the Possible Causes of the DTC P201C Mercedes-Benz?

  • Faulty Intake Manifold Runner Control Actuator
  • Intake Manifold Runner Control Actuator harness is open or shorted
  • Intake Manifold Runner Control Actuator circuit poor electrical connection

How to Fix the DTC P201C 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 P201C 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 P201C Mercedes-Benz code?

Need more information on how to fix the P201C Mercedes-Benz code? Get Access to Factory Service Manuals

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 P201C Mercedes-Benz Code

1. What does OBDII code P201C mean for a Mercedes-Benz?

P201C indicates a low supply voltage issue in the Intake Manifold Runner Control Actuator for Bank 2, which can affect engine performance and efficiency.

2. What are the common symptoms of code P201C in a Mercedes-Benz?

Symptoms may include reduced engine power, poor fuel economy, rough idling, or the Check Engine Light illuminating.

3. What causes the P201C code to appear?

Common causes include a faulty intake manifold runner control actuator, damaged wiring, corroded connectors, or issues with the power supply to the actuator.

4. Is it safe to drive with the P201C code on a Mercedes-Benz?

While the vehicle may still be drivable, ignoring the code can lead to decreased performance and potential long-term engine damage. It’s best to address the issue promptly.

5. How do you diagnose the P201C code on a Mercedes-Benz?

Diagnosis typically involves scanning the vehicle with an OBDII tool, inspecting the actuator and its wiring for damage, and testing the voltage supply to the actuator.

6. Can a dirty intake manifold cause the P201C code?

A dirty or clogged intake manifold is unlikely to cause this specific code, but it can contribute to other engine issues that exacerbate the problem.

7. How do you fix the P201C code in a Mercedes-Benz?

Repairs may involve replacing the intake manifold runner control actuator, repairing or replacing damaged wiring, or addressing issues with the power supply.

8. How much does it cost to fix the P201C code on a Mercedes-Benz?

The cost can vary but typically ranges from $200 to $800 depending on whether only the actuator or additional components like wiring need replacement.

9. Can clearing the code fix the P201C issue?

Clearing the code may temporarily turn off the Check Engine Light, but it won’t fix the underlying problem causing the code.

10. What tools are needed to troubleshoot the P201C code?

You’ll need an OBDII scanner, a multimeter for voltage testing, and potentially replacement parts like the intake manifold runner control actuator.

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