DTC 51-xx, 52-xx, 53-xx, 54-xx, 55-xx: ("X" Can Be 0 Thru 9 Or A Thru F) Internal Failure Of the SRS Unit

WARNING: This page is about a different car, the 2013 Honda Fit, 2012 Honda Fit, 2011 Honda Fit, 2010 Honda Fit, and 2009 Honda Fit. 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 troubleshooting any of these DTCs, check the battery/system voltage and battery cable connections. If the voltage is low, repair the charging system or replace the battery before troubleshooting the SRS. If the battery/system voltage is now OK, ask the customer if the battery ever went dead or if the engine was started and run with the battery in a low state of charge. A dead battery may trigger one or more of these DTCs. (See BATTERY TERMINAL DISCONNECTION AND RECONNECTION ).
Before doing this troubleshooting procedure, review SRS 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.
Determine if the vehicle has been in a collision; make sure all required parts were replaced.

Clear the DTCs with the HDS (see CLEAR THE DTC MEMORY ).
Turn the ignition switch to ON (II), then wait for 10 seconds.
Check for the DTCs with the HDS (see READING THE DTC ).
Is DTC 51-xx, 52-xx, 53-xx, 54-xx, or 55-xx indicated?

YES - Faulty SRS unit; replace the SRS unit (see SRS UNIT REPLACEMENT ).

NO - Intermittent failure, the system is OK at this time. Go to TROUBLESHOOTING INTERMITTENT FAILURES . If another DTC is indicated, troubleshoot the DTC.