BMW convertible-top module fault codes
The 87 fault codes the convertible-top module can store, and what each one means. Some codes mean different things in different versions of the module; tap a code to see which applies to your car.
On: 3 Series (E46), Z8 (E52), Z4 (E85), Z4 (E86)
- 0001 CVM: Coding-data record invalid, not coded (and 2 other meanings)
- 0002 CVM: Coding implausible (and 2 other meanings)
- 0003 CVM: Control-module fault, internal memory (checksum error ROM) (and 2 other meanings)
- 0004 CVM: Control-module fault, internal memory (checksum error EEPROM) (and 1 other meaning)
- 0005 CVM: Control-module fault, coding data (and 2 other meanings)
- 0006 CVM: Control-module fault, internal memory (RAM check faulty) (and 2 other meanings)
- 0007 CVM: Control-unit fault (watchdog) (and 1 other meaning)
- 0008 CVM: Control-unit fault (opcode) (and 1 other meaning)
- 0009 CVM: Control-unit fault (clock monitor) (and 1 other meaning)
- 000A CVM: K bus faulty (and 2 other meanings)
- 0010 CVM: Voltage supply to switch in car faulty
- 0011 CVM: Voltage supply to switch on convertible top faulty (and 1 other meaning)
- 0012 CVM: Open control button permanently active (and 1 other meaning)
- 0013 CVM: Close control button permanently active (and 1 other meaning)
- 0014 CVM: Temperature-sensor input, permanently to ground (and 1 other meaning)
- 0015 CVM: Temperature sensor open-circuited (and 1 other meaning)
- 0016 CVM: Position switch for main pillar, open circuit (and 1 other meaning)
- 0017 CVM: Position switch for main pillar, short circuit to ground (and 1 other meaning)
- 0018 CVM: Position switch for tension bar, open circuit (and 1 other meaning)
- 0019 CVM: Position switch for tension bar, short circuit to ground (and 1 other meaning)
- 001A CVM: Switch, convertible-top comp. lid, voltage > 2.5 V (and 2 other meanings)
- 001B CVM: Switch, convertible-top comp. lid, voltage undefined (and 2 other meanings)
- 001C CVM: Switch, conv.-top comp.lid, short to ground or open circuit (and 2 other meanings)
- 001D CVM: Switch, cowl locked, voltage >2.5 V (and 2 other meanings)
- 001E CVM: Switch, cowl locked, voltage undefined (and 2 other meanings)
- 001F CVM: Switch, cowl locked, short to ground or open circuit (and 2 other meanings)
- 0020 CVM: Switch, cowl unlocked, voltage >2.5 V (and 2 other meanings)
- 0021 CVM: Switch, cowl unlocked, voltage undefined (and 2 other meanings)
- 0022 CVM: Switch, cowl unlocked, short to ground or open circuit (and 2 other meanings)
- 0023 CVM: Switch, conv.-top comp. lid, right, locked, voltage > 2.5 V (and 2 other meanings)
- 0024 CVM: Switch, conv.-top comp. lid, right, locked, voltage undefined (and 2 other meanings)
- 0025 CVM: Switch, conv.-top comp. lid, right, locked, short to grd or open circuit (and 2 other meanings)
- 0026 CVM: Switch, conv.-top comp. lid, left, locked, voltage > 2.5 V (and 1 other meaning)
- 0027 CVM: Switch, conv.-top comp. lid, left, locked, voltage undefined (and 1 other meaning)
- 0028 CVM: Switch, conv.-top comp. lid, left, locked, short to grd or open circuit (and 1 other meaning)
- 0029 CVM: Switch, conv. top locked, voltage >2.5 V (and 1 other meaning)
- 002A CVM: Switch, convertible top locked, voltage undefined (and 1 other meaning)
- 002B CVM: Switch, conv. top locked, short to ground or open circuit (and 1 other meaning)
- 002C CVM: VSW 9, voltage > 5 V (and 1 other meaning)
- 002D CVM: VSW 9, voltage undefined (and 1 other meaning)
- 002E CVM: VSW 9, short circuit to ground (and 1 other meaning)
- 002F CVM: Switch, hard top, voltage > 2.5 V (and 1 other meaning)
- 0030 CVM: Switch, hard top, voltage undefined (and 1 other meaning)
- 0031 CVM: Switch, hard top, short circuit to ground or open circuit (and 1 other meaning)
- 0040 CVM: Drive, cowl, motor current too high during unlocking (unlock) (and 2 other meanings)
- 0041 CVM: Drive, cowl, motor current too high during unlocking (locking) (and 2 other meanings)
- 0042 CVM: Drive, cowl, short circuit to +ve (and 2 other meanings)
- 0043 CVM: Drive, cowl, fault during unlocking (unlock) (and 1 other meaning)
- 0044 CVM: Drive, cowl, fault during unlocking (lock) (and 1 other meaning)
- 0045 CVM: Valve, retract clamping bracket, open circuit (and 1 other meaning)
- 0046 CVM: Valve, retract clamping bracket, short circuit to ground (and 1 other meaning)
- 0047 CVM: Valve, retract clamping bracket, short circuit to +ve (and 1 other meaning)
- 0048 CVM: Valve, extend clamping bracket, open circuit (and 1 other meaning)
- 0049 CVM: Valve, extend clamping bracket, short circuit to ground (and 1 other meaning)
- 004A CVM: Valve, extend clamping bracket, short circuit to +ve (and 1 other meaning)
- 004B CVM: Short between valve, retract clamping bracket, and valve, main pillar (and 1 other meaning)
- 004C CVM: Valve, main pillar, open circuit (and 1 other meaning)
- 004D CVM: Valve, main pillar, short circuit to ground (ground) (and 1 other meaning)
- 004E CVM: Valve, main pillar, short circuit to ground (and 1 other meaning)
- 0050 CVM: Valve, emergency release, open circuit (and 1 other meaning)
- 0051 CVM: Valve, emergency release, short circuit to ground (and 1 other meaning)
- 0052 CVM: Valve, emergency release, short circuit to positive (and 1 other meaning)
- 0053 CVM: Relay, convertible top drive, open circuit
- 0054 CVM: Relay, convertible top drive, short circuit to ground
- 0055 CVM: Relay, convertible top drive, short circuit to positive
- 0056 CVM: Short circuit between output, relay, convertible top drive, and valve, emergency release
- 0057 CVM: Valve, conv.-top comp. lid, open circuit
- 0058 CVM: Valve, conv.-top comp. lid, short circuit to ground
- 0059 CVM: Valve, conv.-top comp. lid, short circuit to +ve
- 005A HECKS, not connected
- 005B HECKS, short circuit to ground
- 005C HECKS, short circuit to Ub+
- 0060 CVM: Convertible-top compartment lid is not raised
- 0061 CVM: Convertible-top compartment lid is not opened
- 0062 CVM: Convertible-top compartment lid is not closed (and 1 other meaning)
- 0063 CVM: Main pillar does not pull clamping bracket from conv.-top compt. (and 1 other meaning)
- 0064 CVM: Main pillar does not force clamping bracket into conv.-top compt. (and 1 other meaning)
- 0065 CVM: Clamping bracket is not fully raised
- 0066 CVM: Clamping bracket does not locate engagement area
- 0067 CVM: Cowl does not move upwards (and 1 other meaning)
- 0068 CVM: Cowl does not move downwards (and 1 other meaning)
- 0069 CVM: Pump relay 1 not connected (and 1 other meaning)
- 006A CVM: Pump relay 1, short circuit to ground (and 1 other meaning)
- 006B CVM: Pump relay 1, short circuit to positive (and 1 other meaning)
- 006C CVM: Pump relay 2 not connected (and 1 other meaning)
- 006D CVM: Pump relay 2, short circuit to ground (and 1 other meaning)
- 006E CVM: Pump relay 2, short circuit to positive (and 1 other meaning)
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