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.
1998 Mercedes Benz E430FACTORY OEM SERVICE PROCEDURE
Combination Control Module DTCS
DIAGNOSTIC TROUBLE CODE LIST
| DTC | Possible Cause | Description |
|---|---|---|
| B1000 | Combination Control Module (CCM) | Replace CCM |
| B1010 | Low Voltage | Check charging system and repair as necessary. |
| B1011 | Excess Voltage | Check charging system and repair as necessary. |
| B1013 | Circuit 15R | TEST 2 and TEST 3 |
| B1014 | Circuit 49 Travel Direction (No Voltage Circuit 15) | TEST 26 |
| B1021 | CAN Data Line Communication With PSE (Pneumatic System Equipment) Interrupted | Check CAN data lines between Pneumatic System Equipment (PSE) control module and combination control module. See WIRING DIAGRAMS in DOOR LOCKS - PNEUMATIC & POWER article. |
| B1024 | CAN Low-Interior Bus Circuit Open Or Short | Check CAN data lines between Pneumatic System Equipment (PSE) control module and combination control module. See WIRING DIAGRAMS in DOOR LOCKS - PNEUMATIC & POWER article. |
| B1025 | CAN High-Interior Bus Circuit Open Or Short | Check CAN data lines between Pneumatic System Equipment (PSE) control module and combination control module. See WIRING DIAGRAMS in DOOR LOCKS - PNEUMATIC & POWER article. |
| B1115 | Rear Defogger Switch Short To Voltage | TEST 22 |
| B1217 | Rain Sensor Communication Interrupted | TEST 16 |
| B1406 | Dome Light Control Wire Short To Voltage | TEST 18 |
| B1407 | Entrance/Exit Light Short To Voltage | TEST 19 |
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.