DTC P0137 KIA

Description

The A C-ECU receives the air conditioning control-related signals from the combination meter via the CAN bus lines. If any of the air conditioning control-related signals from the combination meter cannot be received, the diagnostic trouble code U0155 is stored. Current trouble: Connector(s) or wiring harness in the CAN bus lines between the combination meter and the A C-ECU, the power supply system to the combination meter, the combination meter itself, or the A C-ECU may be defective. Past trouble: If DTC U0155 is stored as a past trouble, carry out diagnosis with particular emphasis on wiring and connector(s) in the CAN bus line between the A C-ECU and the combination meter, and the power supply system to the combination meter. If the connectors and wiring are normal, and obviously the ECU is the cause of the trouble, replace the ECU. If in doubt, do not replace the ECU.