Toyota Repair: DTC Codes P0031, P0037, P2238, air fuel ratio, camry v6


Question
2003 Camry V6, engine light recently came on with. Will replacing the O2 sensor possibly clear the P0031 and 37 faults?

Answer
All of these codes are related to the bank one side of the engine which the one closest to the firewall, the po031 is a malfunction of the bank 1,#1 A/F ratio sensor located in the exhaust manifold, the 37 code is related to the bank 1,#2 O2 sensor located after the cat converter, the 2238 is directly related to the a/f sensor but is somewhat irrelevant because replacing the sensor will take care of that code as well.  At this time I would replace the bank1/#1 sensor and clear the codes then see if the p0037 comes back, it may not because it may have just been reacting to the malfunctioning air/fuel ratio sensor. So replace the a/f sensor in the exhaust anifold near the firewal,that should solve the problem.