DTC 71-2x ("x" can be 0 thru 9 or A thru F): Short in the Driver's Seat Position Sensor

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

NOTE:

Before doing this troubleshooting procedure, find out if the vehicle was in a collision. If so, verify that all the required components were replaced with new components, of the correct part number, and that they were properly installed ( see COMPONENT REPLACEMENT/INSPECTION AFTER DEPLOYMENT ).
Before doing this troubleshooting procedure, review SRS Precautions and Procedures (see PRECAUTIONS AND PROCEDURES ) and General Troubleshooting Information (see DTC (DIAGNOSTIC TROUBLE CODES) ).
Before replacing the SRS unit, check the SRS unit software version with the HDS. If the software version is not the latest, update the SRS unit software (see SRS UNIT UPDATE ), and retest.

Clear the DTC memory (see HOW TO CLEAR DTCS ).
Turn the ignition switch to ON (II), then wait for 10 seconds.
Read the DTC (see HOW TO RETRIEVE DTCS ).
Is DTC 71-2x indicated?

YES -Go to step 4.

NO -Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures (see TROUBLESHOOTING INTERMITTENT FAILURES ). If another DTC is indicated, troubleshoot the DTC.
Turn the ignition switch to LOCK (0), then wait for 10 seconds.
Remove the seat recline cover (see FRONT SEAT RECLINE COVER REMOVAL/INSTALLATION ).
Disconnect the driver's seat position sensor subharness 2P connector (A) from the driver's seat position sensor.

Fig 1: Identifying Driver's Seat Position Sensor Subharness 2P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Turn the ignition switch to ON (II), then wait for 10 seconds.
Read the DTC (see HOW TO RETRIEVE DTCS ).
Is DTC 71-2x indicated?

YES -Go to step 9.

NO -Faulty driver's seat position sensor; replace the driver's seat position sensor (see DRIVER'S SEAT POSITION SENSOR REPLACEMENT ), then clear the DTC.
Clear the DTC memory (see HOW TO CLEAR DTCS ).
Turn the ignition switch to LOCK (0).
Do the 12 volt battery terminal disconnection procedure (see 12 VOLT BATTERY TERMINAL DISCONNECTION AND RECONNECTION ), then wait at least 3 minutes.
Disconnect SRS unit connector B (39P) from the SRS unit (see step 10 ).
Measure the resistance between SRS unit connector B (39P) terminal No. 23 and body ground. There should be an open circuit or at least 1 MΩ.

Fig 2: Measuring Resistance Between SRS Unit Connector B (39P) Terminal No. 23 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the resistance as specified?

YES -Faulty driver's seat position sensor or the SRS unit; replace the driver's seat position sensor (see DRIVER'S SEAT POSITION SENSOR REPLACEMENT ), then clear the DTC. If the problem is still present, replace the SRS unit (see SRS UNIT REPLACEMENT ).

NO -Short to another wire in the floor wire harness or driver's seat position sensor subharness; replace the faulty harness, then clear the DTC.