NOTE: If a control module or one of the components is suspected and the vehicle is still under manufacturer's warranty, refer to the warranty manual before installing a new module/component (section B1.2), or determine if there is any previously approved special program in operation.
NOTE: Universal Scan Tools cannot read the listed codes or can only read 5-digit codes. Match the 5 digits from the scan tool with the first 5 digits of the listed 7 digit code to identify the problem (the last 2 digits give additional information read by the diagnostic system approved by the manufacturer).
NOTE: Always use a digital multimeter when performing voltage or resistance tests (DMM) accurate to three decimal places and with a modern calibration certificate. When testing resistance, always consider the resistance of the DMM wires.
NOTE: Before starting diagnostic programs using Pinpoint tests, check and correct basic problems.
NOTE: If DTCs are logged and there is no problem after performing Pinpoint tests, an intermittent problem may be the cause. Always check for loose connections and corroded contacts.
NOTE: Tire pressure monitoring system DTCs are stored in the central electrical junction box (CJB).
DTC | Description | Possible reason | Action |
B118251 | Tire pressure monitoring system (TPMS) - not programmed | TPMS module in Transport/Factory mode | Using the manufacturer approved diagnostic system, put the TPMS module into client mode |
C1A5616 | Front left wheel module - circuit voltage below threshold (low battery) | Siemens internal algorithm | Install a new module if necessary |
C1A5686 | Front Left Wheel Module - Invalid Signal (out of range) | Siemens internal algorithm | Install a new module if necessary |
C1A5693 | Front left wheel module - not working (lost sensor) | Siemens internal algorithm | Install a new module if necessary |
C1A5711 | Left front activator - short to ground | Left front activator circuit - short to ground | Refer to electrical circuit diagrams and check left front actuator circuit for short to ground |
C1A5712 | Left front activator - short circuit to battery + | Left front activator circuit - short circuit to battery + | Refer to electrical diagrams and check left front actuator circuit for short to +battery |
C1A5713 | Left front activator - open circuit | Left front activator circuit - open circuit | Refer to electrical circuit diagrams and check left front activator circuit for open circuit |
C1A5816 | Front right wheel module - circuit voltage below threshold (low battery) | Siemens internal algorithm | Install a new module if necessary |
C1A5886 | Front Right Wheel Module - Invalid Signal (out of range) | Siemens internal algorithm | Install a new module if necessary |
C1A5893 | Front right wheel module - not working (lost sensor) | Siemens internal algorithm | Install a new module if necessary |
C1A5911 | Right front activator - short to ground | Right front activator circuit - short to ground | Refer to electrical circuit diagrams and check right front actuator circuit for short to ground |
C1A5912 | Right front activator - short circuit to battery + | Right front activator circuit - short circuit to battery + | Refer to electrical diagrams and check right front activator circuit for short to battery |
C1A5913 | Right front activator - open circuit | Right front activator circuit - open circuit | Refer to electrical circuit diagrams and check right front activator circuit for open circuit |
C1A6016 | Rear left wheel module - circuit voltage below threshold (low battery) | Siemens internal algorithm | Install a new module if necessary |
C1A6086 | Rear Left Wheel Module - Invalid Signal (out of range) | Siemens internal algorithm | Install a new module if necessary |
C1A6093 | Rear left wheel module - not working (lost sensor) | Siemens internal algorithm | Install a new module if necessary |
C1A6111 | Left rear activator - short to ground | Left rear activator circuit - short to ground | Refer to electrical circuit diagrams and check left rear activator circuit for short to ground |
C1A6112 | Left rear activator - short circuit to battery + | Left rear activator circuit - short to battery + | Refer to electrical diagrams and check left rear activator circuit for short to +battery |
C1A6113 | Left rear activator - open circuit | Left rear activator circuit - open circuit | Refer to electrical diagrams and check left rear activator circuit for open circuit |
C1A6216 | Rear right wheel module - circuit voltage below threshold (low battery) | Siemens internal algorithm | Install a new module if necessary |
C1A6286 | Rear Right Wheel Module - Invalid Signal (out of range) | Siemens internal algorithm | Install a new module if necessary |
C1A6293 | Rear right wheel module - not working (lost sensor) | Siemens internal algorithm | Install a new module if necessary |
C1A6311 | Right rear activator - short to ground | Right rear activator circuit - short to ground | Refer to electrical circuit diagrams and check right rear actuator circuit for short to ground |
C1A6312 | Right rear activator - short circuit to battery + | Right rear activator circuit - short to battery + | Refer to electrical diagrams and check right rear activator circuit for short to +battery |
C1A6313 | Right rear activator - open circuit | Right rear activator circuit - open circuit | Refer to electrical diagrams and check right rear activator circuit for open circuit |
C1B1412 | Sensor power circuit #1 - short circuit to power | Sensor power circuit #1 - short circuit to power | Refer to electrical circuit diagrams and check sensor #1 power supply circuit for short to battery |
C1D1800 | Unsuccessful locating | Unsuccessful locating of the sensors of the tire pressure monitoring system | Check for additional related DTCs and refer to this DTC Index. |
C1D2105 | Wheel module - main signal malfunction | Siemens internal algorithm | Perform the pinpoint tests associated with this DTC using the manufacturer's approved diagnostic system. |
U015500 | Lost Communication with Instrument Cluster Control Module (IPC) | Loss of communication with the instrument panel | Perform the network test associated with this DTC using the manufacturer approved diagnostic system. |
U016400 | Lost Communication with HVAC Control Module | Lost Communication with Climate Control Module | Perform the network test associated with this DTC using the manufacturer approved diagnostic system. |
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