P1154 Diagnostic Code in 2000 Honda Accord: Engine Power Loss and Rev Limitation
The engine in my 2000 Honda Accord is experiencing significant power loss and will not rev above 1500 RPMs. When the accelerator is pressed, the vehicle feels sluggish and lacks responsiveness. The check engine light has come on with code P1154, which indicates a problem with the oxygen sensor heater circuit in Bank 1, Sensor 2 (after catalytic converter). This issue may be related to sensor malfunction or a faulty wiring connection.
A mechanic has confirmed that the oxygen sensor is functioning properly. They suggest that the engine control module (ECM) might need an update or reprogramming to resolve the P1154 code and restore normal engine performance.