DTC P0504 Lexus
Blend Door Control Circuit High
Blend Door Control Circuit High
Description
To help improve fuel economy and emissions the PCM monitors the HVAC settings for Coolant Temperature Model robustness. The PCM receives HVAC signals in raw data bussed from the HVAC Control Module. These are CAN C signals which indicate the Blower Speed and Driver Side Temperature Door Position. The PCM is required to diagnose these raw signals and set Codes for any failures.
Cause and Solution
BLEND DOOR ACTUATOR SIGNAL OR CONTROL CIRCUIT OPENBLEND DOOR ACTUATOR SIGNAL OR CONTROL CIRCUIT SHORTED TO VOLTAGEBLEND DOOR ACTUATORHVAC MODULE
Video Guide
Diagnostic Info
- DTC Code: P0504
- Brand: Lexus