DTC P1040 BMW
Valvetronic (VVT) CAN Timeout Message (Bank 2)
Valvetronic (VVT) CAN Timeout Message (Bank 2)
Description
After the key has been on for 800ms (within two messages) or the engine running for 400ms, with a battery voltage at 10 volts, the difference between the deactivation and the starting positions exceeds specification. No suspension of BUS activity.
Cause and Solution
ECU failure (or SZL or ZGM)
Bus system failure
Defective bus controller (SZL or ZGM)
Short circuit in CAN wire or open circuit.
Defective DME
Video Guide
Diagnostic Info
- DTC Code: P1040
- Brand: BMW