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2022
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LS 500h AWD
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Repair and Diagnosis
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Brakes
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Mechanical - Hydraulic
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Electronically Controlled Brake System (W/O Advanced Park) - Diagnostic Codes (1 Of 3)
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ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Advanced Park)
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DTC C1203: ECM Communication Circuit Malfunction [10/2020 - 10/2023]
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Typical Enabling Conditions
Typical Enabling Conditions
Monitor runs whenever the following DTCs are not stored
None
Both of the following conditions are met
-
Vehicle speed
40 km/h (24.86 mph) or more
EEPROM read-in
Complete