DTC B10B4 Dodge

EVAP Leak Detection Pump Switch Or Mechanical Fault

EVAP Leak Detection Pump Switch Or Mechanical Fault

Description

BTS from 40-96ºF and ECT Sensor within 10ºF of the BTS signal at startup (cold engine), engine started, and the PCM detected the LDP switch was not in its expected state at key on or engine running.

Cause and Solution

LDP switch signal circuit is open or shorted to groundLDP switch power circuit is open (test power to Fused Ignition)LDP vacuum hose is clogged, loose or restrictedLDP assembly is damaged or has failed (the switch has failed)

Video Guide

Duration: PT4M15S | Uploaded: 2020-06-15

Diagnostic Info

  • DTC Code: B10B4
  • Brand: Dodge
Back to Blog