Error code 42 — Possible communication issue

What does ERR_CODE_42 mean?

This error code may indicate a problem with the communication link between the scan tool and the vehicle's computer systems.

• Loose or damaged OBDII connector or cable.
• Vehicle's communication bus is experiencing issues.
• Scan tool software may require an update.

Click steps to track your progress.

1. 1

   Verify the OBDII cable is securely connected to both the scan tool and the vehicle's DLC.

2. 2

   Inspect the OBDII connector for any visible damage.

3. 3

   Cycle the vehicle's ignition (OFF for 10 seconds, then ON).

4. 4

   Check for available software updates for the scan tool at www.boschdiagnostics.com/downloads.