Honda - OBDb/obdb.community GitHub Wiki

29-bit CAN.

Archive of https://www.ridgelineownersclub.com/threads/custom-pids-for-odb-scantool-app-like-torque-or-carscanner.229500/:

item pid formula units custom header applicable to
ATF Temp 222201 C: AAF: AA*9/5-40 °C/F (offset from -40)   6AT (2017-2019)
ATF Temp 223083 C: O-40F: 9/5*O-40 °C/F (offset from -40)   9AT (2020+)
Current Gear 222201 AC none, range: 0 - 15   6AT (2017-2019)
Current Gear 223086 U none, range: 0 - 15   9AT (2020+)
AT Input Shaft speed 222201 H*256+I 0-8000 rpm   6AT (2017-2019)
AT Output Shaft speed 222201 J*256+K 0-8000 rpm   6AT (2017-2019)
Outside Air Temp 227028 CarScanner:ShortSigned(Q,R) °F/C (depends on your display settings) 18DA60F1 all ?
Cylinders Active (VCM) 222615 AY # of cylinders active (6 or 3)   all ?
TPMS Pressures 226001 FL: K * 256 + LFR: I * 256 + JRL: O * 256 + PRR: M * 256 + N pressures in kPa 18DA26F1 all ?
TPMS Temperatures 226001 FL: ZFR: YRL: ABRR: AA temps in C 18DA26F1 all ?

From https://www.piloteers.org/threads/monitor-honda-custom-obd2-pids-transmission-temp-etc.137202/, indicates that 222201 may work for the Honda Civic 2012.