LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 2018 >> CX-9 Signature >> 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 DTCS

DTC Output Module (M-MDS Display) DTC Malfunction Location Reference For Initial Letter Of DTC Is Capital U
PCM
(PCM)
U0073:00 Unit communication error (See DTC TABLE [PCM (SKYACTIV-G 2.5T)] .)
U0101:00 Communication error with TCM
U0104:00 Communication error with radar unit
U0121:00 Communication error with DSC HU/Control Module
U0131:00 Communication error with EPS control module
U0140:00 Communication error with front body control module (FBCM)
U0151:00 Communication error with SAS control module
U0155:00 Communication error with instrument cluster
U0214:00 Communication error with start stop unit
U0235:00 Communication error with laser sensor
U023A:00 Communication error with forward sensing camera (FSC)
DSC HU/Control Module
(ABS)
U0001:88 Unit communication error (See DTC TABLE [DSC HU/Control Module].)
U0100:00 Communication error with PCM
U0101:00 Communication error with TCM
U0104:00 Communication error with radar unit
U0114:00 Communication error with AWD control module
U0128:00 Communication error with electric parking brake control module
U0131:00 Communication error with EPS control module
U0140:00 Communication error with front body control module (FBCM)
U0151:00 Communication error with SAS control module
U0155:00 Communication error with instrument cluster
U0235:00 Communication error with laser sensor
U023A:00 Communication error with forward sensing camera (FSC)
Radar unit (SBS/MRCC) U0001:88 Unit communication error (See DTC TABLE [RADAR UNIT].)
U0100:00 Communication error with PCM
U0101:00 Communication error with TCM
U0121:00 Communication error with DSC HU/Control Module
U0131:00 Communication error with EPS control module
U0140:00 Communication error with front body control module (FBCM)
U0151:00 Communication error with SAS control module
U0155:00 Communication error with instrument cluster
U0214:00 Communication error with start stop unit
U0235:68 Communication error with laser sensor
U023A:00 Communication error with forward sensing camera (FSC)
TCM
(TCM)
U0073:00 Unit communication error (See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [TCM (GW6A-EL, GW6AX-EL)] .)
U0100:00 Communication error with PCM
U0121:00 Communication error with DSC HU/Control Module
U0131:00 Communication error with EPS control module
U0155:00 Communication error with instrument cluster
U0214:00 Communication error with start stop unit
Front body control module (FBCM)
(F_BCM)
U0001:88 Unit communication error (See DTC TABLE [FRONT BODY CONTROL MODULE (FBCM)].)
U0100:00 Communication error with PCM
U0101:00 Communication error with TCM
U0121:00 Communication error with DSC HU/Control Module
U0151:00 Communication error with SAS control module
U0155:00 Communication error with instrument cluster
U0182:00 Communication error with adaptive front lighting system (AFS) control module
U0214:00 Communication error with start stop unit
U023A:00 Communication error with forward sensing camera (FSC)
Adaptive front lighting system (AFS) control module (AFS) U0001:88 Unit communication error (See DTC TABLE [ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE].)
U0100:00 Communication error with PCM
U0131:00 Communication error with EPS control module
U0140:00 Communication error with front body control module (FBCM)
U0155:00 Communication error with instrument cluster
Auto leveling control module (AFS) U0001:88 Unit communication error (See DTC TABLE [AUTO LEVELING CONTROL MODULE].)
U0100:00 Communication error with PCM
U0140:00 Communication error with front body control module (FBCM)
U0155:00 Communication error with instrument cluster
Position memory control module (DSM) U0001:88 Unit communication error (See DTC TABLE [POSITION MEMORY CONTROL MODULE].)
U0100:00 Communication error with PCM
U0101:00 Communication error with TCM
U0151:00 Communication error with SAS control module
U0155:00 Communication error with instrument cluster
U0214:00 Communication error with start stop unit
Power liftgate (PLG) control module (LTM) U0001:88 Unit communication error (See DTC TABLE [POWER LIFTGATE (PLG) CONTROL MODULE].)
U0100:00 Communication error with PCM
U0101:00 Communication error with TCM
U0214:00 Communication error with start stop unit
Audio amplifier (AM) U0001:88 Unit communication error (See DTC TABLE [AUDIO AMPLIFIER].)
AWD control module (4x4) U0001:88 Unit communication error (See DTC TABLE [ELECTRONIC AWD CONTROL SYSTEM].)
U0100:00 Communication error with PCM
U0101:00 Communication error with TCM
U0121:00 Communication error with DSC HU/Control Module
Electric parking brake control module
(EPB)
U0001:88 Unit communication error (See DTC TABLE [ELECTRIC PARKING BRAKE].)
U0100:00 Communication error with PCM
U0101:00 Communication error with TCM
U0121:00 Communication error with DSC HU/Control Module
U0151:00 Communication error with SAS control module
U0155:00 Communication error with instrument cluster
Laser sensor (SCBS) U0001:00 Unit communication error (See DTC TABLE [LASER SENSOR].)
U0100:00 Communication error with PCM
U0121:00 Communication error with DSC HU/Control Module
U0131:00 Communication error with EPS control module
U0155:00 Communication error with instrument cluster
Forward sensing camera (FSC) U0001:88 Unit communication error (See DTC TABLE [FORWARD SENSING CAMERA (FSC)].)
U0100:00 Communication error with PCM
U0104:00 Communication error with radar unit
U0121:00 Communication error with DSC HU/Control Module
U0131:00 Communication error with EPS control module
U0140:00 Communication error with front body control module (FBCM)
U0151:00 Communication error with SAS control module
U0155:00 Communication error with instrument cluster
U0156:00 Communication error with connectivity master unit (Control Module Unit)
U0214:00 Communication error with start stop unit
EPS control module
(EPS)
U0001:88 Unit communication error (See DTC TABLE [ELECTRIC POWER STEERING (EPS)].)
U0100:00 Communication error with PCM
U0121:00 Communication error with DSC HU/Control Module
U0126:00 Communication error with SAS control module
U0155:00 Communication error with instrument cluster
U0214:00 Communication error with start stop unit
U023A:00 Communication error with forward sensing camera (FSC)
Connectivity master unit
(Control Module Unit)
U0001:88 Unit communication error (See DTC TABLE [CONNECTIVITY MASTER UNIT].)
U0100:00 Communication error with PCM
U0101:00 Communication error with TCM
U0121:00 Communication error with DSC HU/Control Module
U0131:00 Communication error with EPS control module
U0140:00 Communication error with front body control module (FBCM)
U0151:00 Communication error with SAS control module
U0155:00 Communication error with instrument cluster
U0182:00 Communication error with adaptive front lighting system (AFS) control module
U0214:00 Communication error with start stop unit
U0235:00 Communication error with laser sensor
U023A:00 Communication error with forward sensing camera (FSC)
Start stop unit
(SSU)
U0001:88 Unit communication error (See DTC TABLE [START STOP UNIT].)
U0100:00 Communication error with PCM
U0101:00 Communication error with TCM
U0121:00 Communication error with DSC HU/Control Module
U0121:87 Communication error with DSC HU/Control Module
U0131:00 Communication error with EPS control module
U0140:00 Communication error with front body control module (FBCM)
U0146:00 Communication error with instrument cluster
U0151:00 Communication error with SAS control module
U0155:00 Communication error with instrument cluster
SAS control module
(RCM)
U0001:88 Unit communication error (See DTC TABLE [SAS CONTROL MODULE (STANDARD DEPLOYMENT CONTROL SYSTEM)] .)
(See DTC TABLE [SAS CONTROL MODULE (TWO-STEP DEPLOYMENT CONTROL SYSTEM)] .)
U0155:00 Communication error with instrument cluster
Active driving display (HUD) U0001:88 Unit communication error (See DTC TABLE [ACTIVE DRIVING DISPLAY].)
Instrument cluster
(IC)
U0001:88 Unit communication error (See DTC TABLE [INSTRUMENT CLUSTER].)
U0100:00 Communication error with PCM
U0101:00 Communication error with TCM
U0104:00 Communication error with radar unit
U0114:00 Communication error with AWD control module
U0121:00 Communication error with DSC HU/Control Module
U0128:00 Communication error with electric parking brake control module
U0131:00 Communication error with EPS control module
U0140:00 Communication error with front body control module (FBCM)
U0151:00 Communication error with SAS control module
U0156:00 Communication error with connectivity master unit (Control Module Unit)
U0158:00 Communication error with active driving display
U0182:00 Communication error with adaptive front lighting system (AFS) control module
U0214:00 Communication error with start stop unit
U0235:00 Communication error with laser sensor
U023A:00 Communication error with forward sensing camera (FSC)