MIL Comes On With DTC P0134 /P0154

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B15-007
May 15, 2015
01384-01955 Version 2

MIL Comes On with DTC P0134 /P0154

Supersedes 15-007, dated February 4, 2015, to revise the information highlighted in yellow

AFFECTED VEHICLES

Year	Model	Trim	VIN Range
2014–15	MDX	ALL	ALL

REVISION SUMMARY

Under SOFTWARE INFORMATION, the program P/N was updated.
Under WARRANTY CLAIM INFORMATION, the failed part number was updated.

SYMPTOM

The MIL comes on with DTC P0134 (rear A/F sensor [bank 1, sensor 1] heater system malfunction) and/or P0154 (front A/F sensor [bank 2, sensor 1] heater system malfunction).

POSSIBLE CAUSES

The PCM misinterprets the heater system input from the A/F sensor and sets DTCs P0134 and/or P0154.

CORRECTIVE ACTION

Update the PGM-FI software.

SOFTWARE INFORMATION

NOTE: Unnecessary or incorrect repairs resulting from a failure to update the HDS or MVCI are not covered under warranty.

MVCI Control Module (CM) Update:
Application (FW) Version 3.01.40 or later
Database Update 12-Jan-2015 or later

HDS Software Version:
3.015.033 or later

Before beginning the repair, make sure that both the HDS and the MVCI are updated as listed above.

Do only the update listed in this service bulletin.

Check that the MVCI indicates the applicable program ID listed below (or a later program ID) as the Available Update when the update begins.

If the MVCI displays, This vehicle does not need an update at this time during the update, the software for this bulletin is already installed.

For more information about updating the HDS, the MVCI, and vehicle systems, refer to Service Bulletin 01-026, Updating Control Units/Modules.

Year/Model/Trim	Program ID (or later)	Program P/N (or later)
2014–15 MDX 2WD Base, Tech, Tech with Entertainment	J6A590	37805-5J6-A59
2014–15 MDX 2WD Advance with Entertainment	J6A680	37805-5J6-A68
2014–15 MDX SH-AWD Base, Tech, Tech with Entertainment	J6A780	37805-5J6-A78
2014–15 MDX SH-AWD Advance with Entertainment	J6A880	37805-5J6-A88