AutoCodes – Mercedes-Benz – P0222 Mercedes-Benz

P0222 Mercedes-Benz Code - Throttle/Pedal Position Sensor/Switch 'B' Circuit Low Input

Quick Answer

This fault code is stored in the Engine Control Module (ECM) when a malfunction is detected in the throttle control system. Common causes include Faulty Accelerator Pedal Position Sensor, Accelerator Pedal Position Sensor harness is open or shorted, Accelerator Pedal Position Sensor 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
P0222 Mercedes-Benz indicates Throttle/Pedal Position Sensor/Switch 'B' Circuit Low Input.
Common causes
Common causes include Faulty Accelerator Pedal Position Sensor, Accelerator Pedal Position Sensor harness is open or shorted, Accelerator Pedal Position Sensor 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 20,729
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 23, 2022
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Code P0222 Mercedes-Benz Description

This fault code is stored in the Engine Control Module (ECM) when a malfunction is detected in the throttle control system. The driver demand is sensed via the accelerator pedal position sensor. The engine control module adjusts the throttle position accordingly and the throttle position is returned to the engine control module via the throttle position sensor. European On-Board Diagnostics (EOBD) compliant vehicles use at least two accelerator pedal position sensor and at least two throttle position sensors for redundancy. Failure of one circuit can easily be identified and vehicle operation will remain unaffected.
OBDII Code P0222 Mercedes-Benz - Throttle/Pedal Position Sensor/Switch 'B' Circuit Low Input - AutoCodes.com
P0222 Mercedes-Benz Code - Throttle/Pedal Position Sensor/Switch 'B' Circuit Low Input

What are the Possible Causes of the DTC P0222 Mercedes-Benz?

  • Faulty Accelerator Pedal Position Sensor
  • Accelerator Pedal Position Sensor harness is open or shorted
  • Accelerator Pedal Position Sensor circuit poor electrical connection
  • Faulty Throttle Position Sensor (TPS)
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P0222 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0222 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 P0222 Mercedes-Benz code?

Need more information on how to fix the P0222 Mercedes-Benz code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0222 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 P0222 Mercedes-Benz Code

1. What are common symptoms of OBDII code P0222 in a Mercedes-Benz related to the Throttle/Pedal Position Sensor/Switch 'B' Circuit Low Input?

- Common symptoms include reduced engine power, hesitation or stalling when accelerating, and the illumination of the Check Engine Light.

2. What are possible causes of OBDII code P0222 in a Mercedes-Benz?

- Possible causes include a faulty throttle position sensor, damaged wiring or connectors in the sensor circuit, or issues with the engine control module.

3. How can I diagnose the cause of OBDII code P0222 in my Mercedes-Benz?

- Diagnosis typically involves using a scan tool to retrieve the code, testing the throttle position sensor and related wiring for proper operation, and checking for any loose connections.

4. Is it safe to continue driving my Mercedes-Benz with OBDII code P0222 present?

- It is not recommended to drive your vehicle with this code present, as it can lead to potential safety hazards and further damage to the engine if left unresolved.

5. Can I repair OBDII code P0222 in my Mercedes-Benz myself?

- While some DIY enthusiasts may be able to address this issue by replacing the throttle position sensor or fixing wiring problems, it is recommended to seek professional help for accurate diagnosis and repair.

6. How much does it typically cost to repair OBDII code P0222 in a Mercedes-Benz?

- The cost of repair can vary depending on the exact cause of the code, but it may range from $100 to $500 or more, including parts and labor.

7. Are there any preventative maintenance tips to avoid OBDII code P0222 in a Mercedes-Benz?

- Regularly inspecting and maintaining the throttle position sensor, as well as ensuring proper wiring connections, can help prevent issues that trigger this code.

8. Will resetting the Check Engine Light make OBDII code P0222 disappear in my Mercedes-Benz?

- Resetting the Check Engine Light may temporarily clear the code, but it will likely reappear if the underlying issue causing code P0222 is not addressed.

9. Can extreme weather conditions affect the likelihood of OBDII code P0222 in a Mercedes-Benz?

- Yes, extreme temperatures can sometimes impact the performance of the throttle position sensor and related components, potentially leading to the triggering of this code.

10. How long does it typically take to repair OBDII code P0222 in a Mercedes-Benz?

- The repair time can vary depending on the exact cause and complexity of the issue, but it may take a few hours to a full day for a professional technician to diagnose and fix the problem.

Discuss the causes and fixes for P0222 Mercedes-Benz OBDII Code

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