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Home >> Mercedes Benz >> 2001 >> ML430 >> Repair and Diagnosis >> External Pages >> Different car >> Section 12 (Automatic A/C-Heater Systems) >> Diagnostic Trouble Code List

Diagnostic Trouble Code List

WARNING: This page is about a different car, the 2001 Mercedes-Benz SL500 and 2000 Mercedes-Benz SL500. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: To retrieve DTCs, see RETRIEVING DIAGNOSTIC TROUBLE CODES .
CLIMATE CONTROL DIAGNOSTIC TROUBLE CODES

DTC Diagnostic
B1226  In-Vehicle Temperature Sensor
B1227  Outside Temperature Sensor
B1228  Left Heater Core Temperature Sensor
B1230  Evaporator Temperature Sensor
B1231  Engine Coolant Temperature Sensor
B1232  Refrigerant Pressure Sensor
B1233  Refrigerant Temperature Sensor
B1241  Refrigerant Fill
B1416  Coolant Circulation Pump
B1417  Automatic A/C Monovalve
B1419  A/C Compressor Clutch
B1420  Idle Speed Increase
B1421  Auxiliary Fan (AIR) Control Module
B1422  Serial Interface (K1)
B1423  Switchover Valve Block
B1452  Left Air Outlet Feedback Potentiometer
B1453  Left Air Outlet Potentiometer
B1454  Center Air Outlet Potentiometer
(1) Right Air Outlet Potentiometer
B1457  Center Air Outlet Feedback Potentiometer
B1458  Right Air Outlet Feedback Potentiometer
B1459  Serial Interface (K2)
(1) See RIGHT AIR OUTLET POTENTIOMETER  under TESTING.