This diagnostic trouble code indicates the powertrain control module is receiving implausible or erratic data from the air conditioning converter control module via the vehicle communication network. It suggests a communication breakdown or signal integrity issue rather than a mechanical engine failure. This code is frequently associated with hybrid electric vehicles or complex climate control systems.
Physical damage to the communication harness or corrosion at connector pins often disrupts data signals.
The module responsible for sending the data may have an internal fault causing it to transmit invalid information.
High resistance at module ground points can cause voltage fluctuations that corrupt network communication.
A weak battery or failing alternator can supply insufficient voltage for stable module communication.
Moisture entering wiring connectors can cause short circuits or signal interference on the data bus.
Internal failure of the receiving control module is possible but statistically rare compared to wiring or sender issues.
No, this code points to data received from the A/C system, and replacing the PCM is rarely the solution.
Yes, but the air conditioning may not work, and hybrid systems may be limited if equipped.
Network codes often stem from voltage spikes, loose connections, or moisture affecting wiring harnesses.
It may cause a check engine light that fails inspection, though it does not directly indicate an exhaust leak.