P2251 ACURA - Rear Air/Fuel Ratio Sensor Bank 1 Sensor 1 VS Line High Voltage
P2251 Acura DescriptionThe rear air/fuel ratio (A/F) sensor (bank 1, sensor 1) is installed in the exhaust manifold and detects oxygen content in the exhaust gas. The rear A/F sensor transmits a signal to the powertrain control module (PCM), and it enables overall feedback control. The PCM controls fuel injection duration by comparing the target air/fuel ratio with the rear A/F sensor signal. When the VSB1 terminal voltage is more than a specified value for a predetermined time, the PCM detects a malfunction and stores a DTC.
Need more help?Do you need more help with the P2251 Acura code? Ask a question to our users or find an automotive repair shop near you to help fix the OBDII code
P2251 ACURA CommentsHelp us improve AutoCodes.com. Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the P2251 Acura code? Have you replaced any parts?
Any information is appreciated. Thanks