LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 2013 >> MX-5 Miata Club, Standard Trans >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Multiplex Communication System DTCS >> HS-Can
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Multiplex Communication System DTCS: HS-Can

HS-CAN DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC output nodule (M-MDS display) DTC Malfunction location Reference
PCM (PCM) U0073 CAN system communication error (See DTC U0073, U1900 [MULTIPLEX COMMUNICATION SYSTEM] )
U0101 Communication error to TCM (See DETERMINING MALFUNCTIONING PART (HS-CAN) [MULTIPLEX COMMUNICATION SYSTEM] )
U0121 Communication error to ABS HU/CM (With ABS)
Communication error to DSC HU/CM (With DSC)
U0155 Communication error to instrument cluster
TCM (TCM) U0073 CAN system communication error (. DTC U0073, U1900 [MULTIPLEX COMMUNICATION SYSTEM] )
U0100 Communication error to PCM (See DETERMINING MALFUNCTIONING PART (HS-CAN) [MULTIPLEX COMMUNICATION SYSTEM] )
U0121 Communication error to ABS HU/CM (With ABS)
Communication error to DSC HU/CM (With DSC)
ABS HU/CM (ABS) U0073 CAN system communication error (See DTC U0073, U1900 [MULTIPLEX COMMUNICATION SYSTEM] )
U1900 Communication error to other module
U2023 Abnormal message from PCM (See DTC U2023 [ABS] )
DSC HU/CM (ABS) U0073 CAN system communication error (See DTC U0073, U1900 [MULTIPLEX COMMUNICATION SYSTEM] )
U0100 Communication error to PCM (See DETERMINING MALFUNCTIONING PART (HS-CAN) [MULTIPLEX COMMUNICATION SYSTEM] )
U0101 Communication error to TCM
U0155 Communication error to instrument cluster
U1900 Communication error to other module (See DTC U0073, U1900 [MULTIPLEX COMMUNICATION SYSTEM] )
U2023 Abnormal message from PCM (See DTC U2023 [DYNAMIC STABILITY CONTROL (DSC)] )
Power retractable hardtop control module (RHT) U0073 CAN system communication error (See DTC U0073, U1900 [MULTIPLEX COMMUNICATION SYSTEM] )
U0100 Communication error to PCM (See DETERMINING MALFUNCTIONING PART (HS-CAN) [MULTIPLEX COMMUNICATION SYSTEM] )
U0101 Communication error to TCM
U2197 Signal error from PCM
Keyless control module (RKE) U0073 CAN system communication error (See DTC U0073, U1900 [MULTIPLEX COMMUNICATION SYSTEM] )
U0100 Communication error to PCM (See DETERMINING MALFUNCTIONING PART (HS-CAN) [MULTIPLEX COMMUNICATION SYSTEM] )
U0207 Communication error to power retractable hardtop control module
U0323 Communication error to instrument cluster
U2023 Abnormal message from PCM (See DTC U2023 [ADVANCED KEYLESS AND START SYSTEM] )
Instrument cluster (IC) U0073 CAN system communication error (See DTC U0073, U1900 [MULTIPLEX COMMUNICATION SYSTEM] )
U0100 Communication error to PCM (See DETERMINING MALFUNCTIONING PART (HS-CAN) [MULTIPLEX COMMUNICATION SYSTEM] )
U0101 Communication error to TCM
U0121 Communication error to ABS HU/CM (With ABS)
Communication error to DSC HU/CM (With DSC)
U0207 Communication error to power retractable hardtop control module
U0214 Communication error to keyless control module
U2023 Abnormal message from other module (See DTC U2023 [INSTRUMENT CLUSTER] )
U2197 Signal error from PCM (See DETERMINING MALFUNCTIONING PART (HS-CAN) [MULTIPLEX COMMUNICATION SYSTEM] )