Optima Power Loss with P0446, P0135, and P0141 OBD2 Codes
OBD2 diagnostic codes P0446, P0135, and P0146 have been detected on my Optima. The P0446 code is confirmed; however, the presence of P0135 and P0141 remains unconfirmed. Will these codes collectively result in a significant loss of engine power? Are there specific repair steps to address each code without compromising performance?
These codes should be addressed, but a major lack of power is unlikely. What exactly is the confirmed issue (P0446), and what aspects of the P0135 and P0141 readings are still unverified? Clarifying these details can help determine the root cause and appropriate repair steps.