OBD II Fault Code

  • OBD II P240B

OBD-II Code Powertrain Control Module (PCM) software needs to be updated is defined as a Evaporative Emission System Leak Detection Pump Heater Control

The DTML Pump pressurizes the fuel tank to check for leaks when the vehicle is off. If this pump fails, code P240A will be set.

Common Problems That Trigger the P240B Code

  • DMTL pump failure
  • Powertrain Control Module (PCM) software needs to be updated
  • Wiring issue
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