Mercedes-Benz Error Code P1397: How to Fix It

Q: Can I drive my Mercedes with P1397 error code?

It's not recommended to drive long distances with P1397. The faulty camshaft sensor can cause poor performance, reduced fuel economy, and potential engine damage. Have it diagnosed and repaired as soon as possible.

Q: How much does it cost to fix P1397 on a Mercedes?

DIY repair typically costs $50-150 for the sensor. Professional repair ranges from $200-500 depending on labor rates and whether additional diagnostics are needed.

Q: What causes Mercedes camshaft position sensor failure?

Common causes include normal wear, oil contamination, overheating, wiring harness damage, or timing chain stretch affecting sensor readings.

Q: How do I know if it's the sensor or wiring harness?

Use a multimeter to test sensor voltage and continuity. If the sensor receives proper voltage but doesn't output correct signals, the sensor is likely faulty. If there's no voltage to the sensor, check the wiring harness.

Q: Will P1397 cause my Mercedes to fail emissions testing?

Yes, P1397 will likely cause an emissions test failure. The error code indicates an engine management problem that affects combustion efficiency and emissions control systems.

Abstract

Mercedes-Benz error code P1397 indicates a problem with the Bank 2 camshaft position sensor, where the sensor is providing readings that don't match what the engine control unit expects. This can cause rough idling, poor acceleration, and potential engine damage if not addressed promptly.