Mercedes-Benz Error Code P2066: How to Fix It

Q: Can I drive my Mercedes with P2066 error code?

Yes, P2066 is a low-severity code that won't prevent driving, but you may experience inaccurate fuel gauge readings. It's safe to drive short distances, but get it diagnosed soon to avoid running out of fuel unexpectedly.

Q: What causes Mercedes P2066 fuel level sensor error?

Common causes include a faulty fuel level sensor, corroded wiring connections, damaged fuel tank wiring harness, or a defective fuel pump assembly. Age and wear are the most frequent culprits in high-mileage vehicles.

Q: How much does it cost to fix P2066 on a Mercedes?

Repair costs typically range from $200-800 depending on the root cause. Simple wiring repairs cost $200-400, while fuel level sensor replacement can cost $400-800 including labor at a Mercedes dealership.

Q: Will P2066 cause my Mercedes to fail emissions testing?

Yes, any active trouble code including P2066 will likely cause your Mercedes to fail emissions testing. The code must be cleared and the issue resolved before passing inspection.

Q: How do I reset P2066 code on Mercedes-Benz?

Use an OBD2 scanner to clear the code, but it will return if the underlying problem isn't fixed. After repairs, clear the code and drive 50-100 miles to ensure it doesn't return before considering the issue resolved.

Abstract

Mercedes-Benz error code P2066 indicates that fuel level sensor 2 is providing implausible or inconsistent readings to the engine control module. This typically means the sensor is malfunctioning, has loose connections, or there's an issue with the fuel tank's wiring harness.