Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSMAZDA20105 SPORT, 2.3 L, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCOMMUNICATION DEVICESON-BOARD DIAGNOSTIC [MULTIPLEX COMMUNICATION SYSTEMDTC TABLE [MULTIPLEX COMMUNICATION SYSTEM]
2010 Mazda 5 Sport, 2.3 L, Standard
DTC Table [Multiplex Communication System]
2010 Mazda 5 Sport, 2.3 L, StandardSECTION DTC Table [Multiplex Communication System]
DTC CHART
| DTC output module | DTC | Malfunction location | Action | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PCM | U0073 | CAN system communication error | (See DTC U0073, U2012 [MULTIPLEX COMMUNICATION SYSTEM] .) | ||||||||||||
| U0101 | Communication error to TCM | (See PROCEDURES FOR DETERMINING THE LOCATION OF A MALFUNCTION [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(1) | U0073 | CAN system communication error | (See DTC U0073, U2012 [MULTIPLEX COMMUNICATION SYSTEM] .) | ||||||||||||
| U0100 | Communication error to PCM | (See PROCEDURES FOR DETERMINING THE LOCATION OF A MALFUNCTION [MULTIPLEX COMMUNICATION SYSTEM] .) | |||||||||||||
| EHPAS control module | U0073 | CAN system communication error | (See DTC U0073, U2012 [MULTIPLEX COMMUNICATION SYSTEM] .) | ||||||||||||
| U0100 | Communication error to PCM | (See PROCEDURES FOR DETERMINING THE LOCATION OF A MALFUNCTION [MULTIPLEX COMMUNICATION SYSTEM] .) | |||||||||||||
| U2023 | Abnormal message from PCM | (See DTC U2023 .) | |||||||||||||
| ABS HU/CM(2) | U1900 | Communication error to instrument cluster | (See PROCEDURES FOR DETERMINING THE LOCATION OF A MALFUNCTION [MULTIPLEX COMMUNICATION SYSTEM] .) | ||||||||||||
| U2012 | CAN system communication error | (See DTC U0073, U2012 [MULTIPLEX COMMUNICATION SYSTEM] .) | |||||||||||||
| DSC HU/CM(3) | U1900 | Communication error to instrument cluster | (See PROCEDURES FOR DETERMINING THE LOCATION OF A MALFUNCTION [MULTIPLEX COMMUNICATION SYSTEM] .) | ||||||||||||
| U2012 | CAN system communication error | (See DTC U0073, U2012 [MULTIPLEX COMMUNICATION SYSTEM] .) | |||||||||||||
| U2023 | Abnormal message from PCM | (See DTC U2023 [DYNAMIC STABILITY CONTROL (DSC)] .) | |||||||||||||
| U2202 | Communication error to PCM | (See DTC U2202 [MULTIPLEX COMMUNICATION SYSTEM] .) | |||||||||||||
| Instrument cluster | U0073 | CAN system communication error (HS-CAN) | (See DTC U0073, U2012 [MULTIPLEX COMMUNICATION SYSTEM] .) | ||||||||||||
| U0100 | Communication error to PCM | (See PROCEDURES FOR DETERMINING THE LOCATION OF A MALFUNCTION [MULTIPLEX COMMUNICATION SYSTEM] .) | |||||||||||||
| U0121 | Communication error to ABS HU/CM (with ABS) Communication error to DSC HU/CM (with DSC) |
||||||||||||||
| U0131 | Communication error to EH PAS control module | ||||||||||||||
| U0140 | Communication error to BCM | ||||||||||||||
| U2023 | Abnormal message from PCM | (See DTC U2023 [INSTRUMENT CLUSTER] .) | |||||||||||||
| U2516 | CAN system communication error (MS-CAN) | (See DTC U0073, U0516, U2516, 16:ER12, 26:ER81, CAN BUS [MULTIPLEX COMMUNICATION SYSTEM] .) | |||||||||||||
| Information display | U0164 | Communication error to climate control unit | (See PROCEDURES FOR DETERMINING THE LOCATION OF A MALFUNCTION [MULTIPLEX COMMUNICATION SYSTEM] .) | ||||||||||||
| U0181 | Communication error to instrument cluster | ||||||||||||||
| U0184 | Communication error to audio unit (base module) | ||||||||||||||
| U2516 | CAN system communication error | (See DTC U0073, U0516, U2516, 16:ER12, 26:ER81, CAN BUS [MULTIPLEX COMMUNICATION SYSTEM] .) | |||||||||||||
| HF/TEL unit (without car-navigation system) | 26: Er81 | CAN system communication error | (See DTC U0073, U0516, U2516, 16:ER12, 26:ER81, CAN BUS [MULTIPLEX COMMUNICATION SYSTEM] .) | ||||||||||||
| HF/TEL unit (with car-navigation system) | CAN Bus | CAN system communication error | (See DTC U0073, U0516, U2516, 16:ER12, 26:ER81, CAN BUS [MULTIPLEX COMMUNICATION SYSTEM] .) | ||||||||||||
| Climate control unit(4) | U0140 | Communication error to BCM | (See PROCEDURES FOR DETERMINING THE LOCATION OF A MALFUNCTION [MULTIPLEX COMMUNICATION SYSTEM] .) | ||||||||||||
| U0155 | Communication error to instrument cluster | ||||||||||||||
| U0516 | CAN system communication error | (See DTC U0073, U0516, U2516, 16:ER12, 26:ER81, CAN BUS [MULTIPLEX COMMUNICATION SYSTEM] .) | |||||||||||||
| Audio unit (base unit)(5) | 16: Er12 | CAN system communication error | (See DTC U0073, U0516, U2516, 16:ER12, 26:ER81, CAN BUS [MULTIPLEX COMMUNICATION SYSTEM] .) | ||||||||||||
| Car-navigation unit(6) | 16: Er12 | CAN system communication error | (See DTC U0073, U0516, U2516, 16:ER12, 26:ER81, CAN BUS [MULTIPLEX COMMUNICATION SYSTEM] .) | ||||||||||||
| 17: Er11 | Communication error to instrument cluster | (See PROCEDURES FOR DETERMINING THE LOCATION OF A MALFUNCTION [MULTIPLEX COMMUNICATION SYSTEM] .) | |||||||||||||
| BCM | U0073 | CAN system communication error | (See DTC U0073, U0516, U2516, 16:ER12, 26:ER81, CAN BUS [MULTIPLEX COMMUNICATION SYSTEM] .) | ||||||||||||
| U0100 | Communication error to PCM | (See PROCEDURES FOR DETERMINING THE LOCATION OF A MALFUNCTION [MULTIPLEX COMMUNICATION SYSTEM] .) | |||||||||||||
| U0155 | Communication error to instrument cluster | ||||||||||||||
| U0166 | Communication error to climate control unit | ||||||||||||||
|
|||||||||||||||
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.