This network code indicates the vehicle's main control module is receiving invalid or implausible data from a DC/AC converter control module designated 'B'. It is a communication/data-validity fault on the vehicle network, not a direct measurement of converter output.
The converter control module itself may be failing internally and transmitting corrupted or implausible data over the network.
Open, shorted, corroded, or loose wiring/connectors in the communication bus can cause invalid data to be received by the requesting module.
Weak or intermittent power/ground to the converter control module can cause erratic data output without a true internal failure.
CAN/LIN bus issues such as resistance imbalance, shorting, or interference from another failing module can corrupt data in transit.
Very rarely, the receiving control module may misinterpret valid data due to software corruption or internal failure; this should only be considered after all other causes are ruled out.
Not necessarily. The code indicates invalid data was received, which is often caused by wiring, connector, power supply, or network faults. The converter module itself is a likely but not automatic cause; proper diagnosis is required.
No, replacing the PCM/ECM is almost never the correct fix for this code. The fault is typically in the converter module, its wiring, its power/ground, or the communication bus. The PCM should be considered only after all other possibilities are thoroughly eliminated.
It depends on the vehicle. In hybrid or electric vehicles, this code may trigger reduced power, limited operating modes, or a no-start condition. Have it diagnosed promptly rather than continuing to drive with degraded drivability.
Yes. A weak or unstable 12V supply can cause the converter control module to behave erratically and transmit invalid data. Checking power supply and ground quality is a key diagnostic step.