B1600 - FAULT CODE - OBD2

B1600 Code failures by brands

B1600 FORD, LINCOLN, MERCURY: PATS IGNITION KEY TRANSPONDER SIGNAL IS NOT RECEIVED

Description of DTC code B1600

The PATS (Passive Anti-Theft System) links with the key of this system. In the course of every vehicle start sequence, the PATS transponder reads the code that identifies the key, then, data is sent to the instrument cluster. The control functions are included in the instrument cluster. On the other hand, the instrument cluster carries out the PATS functions, such as receiving a message to the PCM (Powertrain Control Module) that regulates the engine activation. The key interrogation sequence is started by the instrument cluster when this turns to the On or Start position.

The B1600 OBD2 diagnostic code for Ford, Lincoln, and Mercury vehicles relates to the Passive Anti-Theft System. It is set when the Passive Anti-Theft System is not receiving a signal from the transponder.

Symptoms of fault code B1600

Check Engine light ON.

Causes of OBD2 B1600

The B1600 OBDII fault code is set for one of the following reasons:

The passive anti-theft system key may be in a bad condition.
The PATS transponder may be damaged.
The PCM may be faulty.

Possible solutions of the DTC code B1600

To troubleshoot DTC B1600 OBD2, try this:

Consult the Technical Service Bulletins.
Check with an automotive scanner to see if additional DCTs are stored on the B1600. If you detect the PATS-related codes, perform their diagnosis according to the order indicated by the scanner.
Check the passive anti-theft system and PATS transponder for proper key conditions. Take into account the guidelines given by the manufacturer. If you discover inconsistencies or damage, make the appropriate corrections.