DTC U0127: Gauge Control Module Lost Communication With the TPMS Control Unit (TPMS message)

WARNING: This page is about a different car, the 2011 Honda Pilot, 2010 Honda Pilot, and 2009 Honda Pilot. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A )

Clear the DTCs with the HDS.
Turn the ignition switch to LOCK (0) and then back to ON (II).
Wait for 6 seconds or more.
Check for DTCs with the HDS.
Is DTC U0127 indicated?

YES - Go to step 6.

NO - Intermittent failure, the system is OK at this time. Check for loose or poor connections. ■
From the system select menu, select TPMS.
Does the HDS communicate with the TPMS control unit?

YES - Go to step 6.

NO - Go to TPMS indicator does not go off, and no DTCs are stored, (see TPMS INDICATOR DOES NOT GO OFF, AND NO DTCS ARE STORED )
Check for TPMS DTCs with the HDS.
Are any TPMS DTCs indicated?

YES - Go to the indicated DTC's troubleshooting, then recheck.

NO - Go to step 7.
Turn the ignition switch to LOCK (0).
Disconnect the gauge control module 32P connector.
Disconnect TPMS control unit 20P connector.
Check for continuity between gauge control module 32P connector terminals No. 29 and No. 30 and TPMS control unit 20P connector terminals No. 11 and No. 1 individually.
Is there continuity?

YES - Substitute a known-good TPMS control unit, and recheck. If the indication goes away, replace the original TPMS control unit. If the DTC is still present, replace the gauge control module (see GAUGE CONTROL MODULE REPLACEMENT ). ■

NO - Repair an open in the F-CAN wire. ■

Fig 1: Checking Continuity Between Gauge Control Module 32P Connector Terminals & TPMS Control Unit 20P Connector Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.