Passive Anti-Theft System (PATS) - Diagnostic Trouble Codes (DTC) Descriptions

WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

EXPANDED DIAGNOSTIC TROUBLE CODES (DTC) DESCRIPTIONS

DTC	Expanded Description
B1213	Less than 2 keys programmed to the PATS control. Erase the continuous codes, cycle the ignition, then carry out the self-test again. If DTC B1600, B1601, B1602 or B1681 are present, they must be corrected first. If DTC B1213 is the only self-test DTC, then cycle the second PATS key in the ignition to program.
B1600	No PATS key read by PATS control. This can be caused by the PATS key, PATS transceiver, circuits between the PATS transceiver and the PATS control and/or the PATS control
B1601	Unprogrammed PATS key. There is no issue with the PATS key itself, but the key must be programmed into the PATS memory (unless the maximum number of keys are already programmed). Refer to GENERAL PROCEDURES in this article. No parts need to be replaced for this DTC.
B1602	Partial PATS key was read. Make sure that approved PATS key (Ford, Rotunda, or Strattec) is being used. Large metal objects, additional PATS keys, or devices used to purchase gasoline located on the customer's key ring can cause interference. Instruct the customer to keep such items from touching the ignition key during engine start. It is not necessary to remove the objects from the customer's key ring. Remote starter equipment can also cause this DTC. Remove any remote starter equipment close to the transceiver before conducting further diagnosis. This DTC can be caused by the PATS key or the PATS transceiver.
B1681	PATS transceiver signal is not received by the PATS control. This DTC can be caused by circuits between the PATS transceiver and the PATS control, the PATS transceiver or the PATS control. Follow the pinpoint test for diagnosis. This can also be caused by using the incorrect transceiver part number. Make sure that the correct transceiver part number is being used.
B2009	Indicates a communication issue between the PCM and TCM. This DTC cannot be caused by the PATS key, the PATS transceiver or the circuits between the PATS transceiver and PATS control. Whenever PATS has the DTC B2009 stored, there should be a DTC P1260, Theft Detected-Engine Disabled, stored in the TCM. Verify that DTC P1260 is stored in the TCM. If the DTC P1260 is not stored in the TCM, there is a power up issue for the PCM or the TCM. (i.e. PATS is powering up at key ON/START, but the TCM is not. Therefore, PATS tries to communicate over circuits 914 and 915 and there is no response from the PCM.) Make sure that the PCM and TCM power and ground circuits are functioning. Make sure that the diagnostic tool can communicate with the PCM and the TCM.
B2103	Transceiver module antenna failure. Incorrect or nonexistent data from the transceiver.
B2141	NVM configuration failure. PATS does not have a stored TCM_ID in memory (PATS PID TCM_ID=not STORED). If a DTC B2009 is also present, it must be repaired first. If a DTC U1900 is also present, attempt to repair the DTC. However, repair to DTC U1900 may not be required prior to repairing DTC B2141
B2431	The ignition key was not programmed. Make sure that the correct key is being used.
U1900	Indicates a communication issue between the PATS control and some other module. Do not carry out the PATS diagnostics if a no start is not reported or if the anti-theft indicator is not flashing rapidly at key ON. If the indicator is flashing, check to make sure the PCM and TCM are powered up and operating. If the PCM or TCM is not powered up or operating, continue with PCM or TCM diagnostics.
P1260	This DTC will be stored any time the TCM disables the vehicle because of a PATS issue. Whenever the TCM has stored DTC P1260, there should be PATS DTC(s) stored that require diagnosis.