Conditions for Clearing the DTC

The power moding malfunction must be corrected and then the code can be cleared by using the scan tool. The code also clears after 100 ignition cycles.

Fig 1: Normal Device Power Moding Specifications

Courtesy of GENERAL MOTORS CORP.

Fig 2: Code Setting Criteria For Device Power Moding Specifications

Courtesy of GENERAL MOTORS CORP.

Fig 3: Diagnostic Chart - DTC B1440

Courtesy of GENERAL MOTORS CORP.