Error Code Q212 Help Guide

If you are encountering error code Q212, the following information will help you understand the possible causes and required actions to resolve it. This article covers three specific scenarios associated with this error code.

Scenario 1: RDF on Record

Error code Q212 may indicate that there is an RDF (Record of Failure) on record. In such cases, it is necessary to process the situation as a resubmit.

• Note for Diesel-Powered Vehicles: E-filing is not possible due to this newer error. You must send in your documents for processing manually.
• You will need a clearance letter from the California Air Resources Board (CARB) before proceeding further.
  For more details, visit: CARB Programs - CTC

Scenario 2: CARB Non-Compliant Heavy-Duty Vehicle (HDIM)

The presence of error code Q212 regarding HDIM indicates non-compliance with CARB regulations. This means that the vehicle does not adhere to emissions standards set by CARB for heavy-duty vehicles.

• Action Required: Contact CARB’s compliance line at 1-866-634-3735 for further assistance in addressing this issue.

Scenario 3: Cab Non-Compliant Issue

This type of Q212 error refers specifically to communication problems between the vehicle’s computer system and its cabin control unit, typically signaling malfunction or compatibility issues within these systems.

• Troubleshooting Advice: Consult a certified technician who can diagnose and resolve issues related to cab control systems.