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.
2008 Infiniti M45 BaseFACTORY OEM SERVICE PROCEDURE
Auto Cruise Control System DTCS
AUTO CRUISE CONTROL SYSTEM DIAGNOSTIC TROUBLE CODES (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| DTC C1A00 | CONTROL UNIT |
| DTC C1A01 | POWER SUPPLY CIR, C1A02 POWER SUPPLY CIR 2 |
| DTC C1A03 | VHCL SPEED SE CIRC |
| DTC C1A04 | ABS/TCS/VDC CIRC |
| DTC C1A05 | BRAKE SW/STOP L SW |
| DTC C1A06 | OPERATION SW CIRC |
| DTC C1A12 | LASER BEAM OFFCNTR |
| DTC C1A13 | STOP LAMP RLY FIX |
| DTC C1A14 | ECM CIRCUIT |
| DTC C1A15 | GEAR POSITION |
| DTC C1A16 | RADAR STAIN |
| DTC C1A18 | LASER AIMING INCMP |
| DTC C1A21 | UNIT HIGH TEMP |
| DTC C1A24 | NP RANGE |
| DTC C1A25 | SHIFT RANGE IND |
| DTC C1A26 | ECD MODE MALF |
| DTC C1A27 | ECD PWR SUPLY CIR |
| DTC C1A33 | CAN TRANSMISSION ERROR |
| DTC C1A34 | COMMAND ERROR |
| DTC U0121 | VDC CAN CIR2 |
| DTC U0401 | ECM CAN CIR1 |
| DTC U0402 | TCM CAN CIR1 |
| DTC U0415 | VDC CAN CIR1 |
| DTC U1000 | CAN COMM CIRCUIT |
| DTC U1010 | CONTROL UNIT (CAN) |
Factory Service Tools
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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.
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