Operation CHARM: Car repair manuals for everyone.

Test D: DTC B1602 - The Passive Anti-Theft System (PATS) Received An Invalid Key Code Format From The Ignition Key Transponder

PINPOINT TEST D: DTC B1602 - THE PASSIVE ANTI-THEFT SYSTEM (PATS) RECEIVED AN INVALID KEY CODE FORMAT FROM THE IGNITION KEY TRANSPONDER


D1-D3:






Normal Operation
During each vehicle start sequence, the PATS transceiver reads the PATS key identification code and sends the data to the powertrain control module (PCM).

Possible Causes
- PATS key
- PATS transceiver
- PCM