DTC P2240 Acura
Front Air Fuel Ratio (A F) Sensor (Bank 2, Sensor 1) IP Circuit High Voltage
Front Air Fuel Ratio (A F) Sensor (Bank 2, Sensor 1) IP Circuit High Voltage
Description
With the engine running the IPB2 terminal voltage is 5.6 volts or more, or 2 volts or less, for at least 15 seconds. The execution time is continuous and DTCs P0155, P2197, P2240, P2241, P2247, P2249, P2254, P2255, P2630, P2631 are not active. NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot.
Cause and Solution
Poor connections or loose terminals at the A F sensor (Sensor 1)
Open circuit between the PCM and the A F sensor (Sensor 1)
Faulty A F sensor (Sensor 1)
PCM needs to be updated with the latest software
Video Guide
Diagnostic Info
- DTC Code: P2240
- Brand: Acura