DTC B102A-64: Flame Sensor - Signal plausibility failure: Action
NOTE:
- The fuel fired booster heater contains many serviceable components. It should not be necessary to install a new fuel fired booster heater to rectify this fault.
- To check the operation of the fuel fired booster heater, perform routine - Auxiliary Heater (AHCM) Activation Test (0x900A). Repeat the routine if excessive smoke is emitted from the fuel fired booster heater exhaust.
- Refer to the appropriate system wiring diagrams and check the fuel fired booster heater flame sensor circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness or install a new fuel fired booster heater flame sensor as necessary