Engine-Codes - Mercedes-Benz - P0812 Mercedes-Benz

P0812 Mercedes-Benz Code - Reverse Input Circuit

- Code Popularity: 2,283 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
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What are the Possible Causes of the DTC P0812 Mercedes-Benz?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Reverse Input Switch
  • Reverse Input Switch harness is open or shorted
  • Reverse Input Switch circuit poor electrical connection
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How to Fix the DTC P0812 Mercedes-Benz?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P0812 Mercedes-Benz code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the P0812 Mercedes-Benz Code Mean?

The Transmission Control Module (TCM) monitors the Reverse Switch Input signal. The TCM sets the OBDII code when the Reverse Switch Input is not to factory specifications.

P0812 Mercedes-Benz Code - Reverse Input Circuit

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