01 What’s That Noise? Diagnosing and Fixing Strange Engine Sou… • 02 The Future of Mechanics: Skills That Will Make You Rich • 03 Squealing Engine? Don't Panic! It Might Just Be Your Serpen… • 04 B0037 and B0038: How to Fix AUX Switch Problems DTC Codes • 05 Accelerator Pedal Sensors: Everything You Need to Know • 06 In-Depth Look at ABS: How Your Brakes Adapt to Prevent Whee… • 07 Engine Thirst: Identifying the Sounds of a Car in Need of O… • 08 The Hidden Mirror In Your Sun Visor Actually Has A Surprisi… • 09 Should You Replace Your Brakes and Rotors with New or Used … • 10 Expert Advice: Head Gasket Troubles and When to Seek Profes… •

DTC codes / P2Axx · Hybrid propulsion / P2AEF

P2AEFIntake Air O2 Sensor Negative Current Control Circuit Open Bank 2

P2AEF indicates that the powertrain control module has detected an open circuit in the negative current control path for the intake air oxygen sensor on bank 2. This sensor is used to monitor oxygen content in the intake air stream, and the open circuit prevents the module from properly controlling the sensor's heater current, which can affect emissions and fuel control strategies.

SystemPowertrain
Code typeGeneric (all makes)
SeverityMedium
Fix difficultyIntermediate
AreaHybrid propulsion
Running on fumes Free guides aren't free to make. Top up the tank. Any amount, one time. Fuel the Garage