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Symptom List: B1800 NO START Test Note: All symptoms listed above are diagnosed using the same tests. The title for the tests will be B1800 NO START. When Monitored and Set Condition: B1800 NO START When Monitored: After DCHA activation. Set Condition: This DTC will set if the Flame Sensor resistance is not within the expected parameters 160 sections after activation. B1801 FLAME OUT: DURING HEATING CYCLE When Monitored: After DCHA activation, and during subsequent start attempts. Set Condition: This DTC will set if the Flame Sensor resistance is not within the expected parameters. B1801 FLAME OUT: UNSTABLE OPERATION When Monitored: After DCHA activation. Set Condition: This DTC will set if the Flame Sensor resistance is not within the expected parameters. POSSIBLE CAUSES LOW FUEL LEVEL IN VEHICLE’S FUEL TANK DOSING PUMP INOPERABLE, NO DOSING PUMP DTCS SET DCHA FUEL LINE RESTRICTED/LEAKING/DAMAGED DOSING PUMP DCHA AIR INTAKE/EXHAUST RESTRICTED DCHA HEATER MODULE FAULT 287 CABIN HEATER |