DTC P0712: ATF Temperature Sensor (Short)

WARNING: This page is about a different car, the 2013 Honda Odyssey, 2012 Honda Odyssey, and 2011 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review General Troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).
This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.

Turn the ignition switch to ON (II).
Check the ATF Temp Sensor (V) with the HDS in the A/T Data List.
Is the ATF Temp Sensor (V) 0.07 V or less?

YES -Go to step 3.

NO -Intermittent failure, the system is OK at this time. Check for an intermittent short to body ground in the ATFT wire between the ATF temperature sensor and the PCM.
Turn the ignition switch to LOCK (0).
Disconnect the ATF temperature sensor connector at the transmission end cover.
Turn the ignition switch to ON (II).
Check the ATF Temp Sensor (V) with the HDS in the A/T Data List.
Is the ATF Temp Sensor (V) 0.07 V or less?

YES -Go to step 7.

NO -Replace ATF temperature sensor (see ATF TEMPERATURE SENSOR REPLACEMENT ), then go to step 11.
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect PCM connector C (49P).
Check for continuity between ATF temperature sensor connector terminal No. 1 and body ground.

Fig 1: Checking Continuity Between ATF Temperature Sensor Connector Terminal No. 1 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Repair a short to body ground in the wire between PCM connector terminal C33 and ATF temperature sensor connector terminal No. 1, then go to step 11.

NO -Go to step 17.
Reconnect all connectors.
Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine in P, and wait for at least 20 seconds.
Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0712 indicated?

YES -Check for an intermittent short to body ground in the wire between the ATF temperature sensor and the PCM, then go to step 1.

NO -Go to step 16.
Monitor the OBD status for P0712 in the DTCs MENU with the HDS.
Does the HDS indicate PASSED?

YES -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 15, go to the INDICATED DTC'S TROUBLESHOOTING .

NO -If the HDS indicates FAILED, check for an intermittent short to body ground in the wire between the ATF temperature sensor and the PCM, then go to step 1. If the HDS indicates NOT COMPLETED, go to step 14.
Reconnect all connectors.
Update the PCM if it does not have the latest software (see PCM UPDATE ), or substitute a known-good PCM (see SUBSTITUTING THE PCM ).
Start the engine in P, and wait for at least 20 seconds.
Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0712 indicated?

YES -Check for an intermittent short to body ground in the wire between the ATF temperature sensor and the PCM. If the PCM was updated, substitute a known-good PCM (see SUBSTITUTING THE PCM ), then go to step 19. If the PCM was substituted, go to step 1.

NO -Go to step 21.
Monitor the OBD status for P0712 in the DTCs MENU with the HDS.
Does the HDS indicate PASSED?

YES -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see PCM REPLACEMENT ). If any other Pending or Confirmed DTCs were indicated in step 20, go to the INDICATED DTC'S TROUBLESHOOTING .

NO -If the HDS indicates FAILED, check for an intermittent short to body ground in the wire between the ATF temperature sensor and the PCM. If the PCM was updated, substitute a known-good PCM (see SUBSTITUTING THE PCM ), then go to step 19. If the PCM was substituted, go to step 1. If the HDS indicates NOT COMPLETED, go to step 19.