DTC Troubleshooting: P2253, P2256 (3.0L Engine): Notes
DTC P2253 : Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) AFV Circuit High Voltage DTC P2256 : Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) AFV Circuit High Voltage
NOTICE:
Before you troubleshoot, review the How to Troubleshoot - Refer to: How to Troubleshoot the Fuel and Emissions Systems (2.0L Engine) or How to Troubleshoot the Fuel and Emissions Systems (3.0L Engine) .