DTC P2249 Acura
Front A F Sensor (Bank 2, Sensor 1) VCENT Circuit Low Voltage
Front A F Sensor (Bank 2, Sensor 1) VCENT Circuit Low Voltage
Description
With the engine running the VSB2 terminal voltage between reads 0.3-1.5 volts. The execution time is continuous and DTCs P0155, P2197, P2240, P2241, P2247, P2254, P2255 are not active. The IPB2 input terminal voltage is 1.0 volts or less for at least 5 seconds, after the sensor becomes active, 85 seconds before the sensor becomes 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) and the PCM
Short 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: P2249
- Brand: Acura