2008 Mazda B Series 4wd-cab-plus OBD2 Code P2195 O2 Sensor Signal Biased/Stuck Lean

What Does P2195 Code Mean?

OBD-II Code P2195 is defined as a O2 Sensor Signal Biased/Stuck Lean

The Oxygen Sensor (or Air/Fuel Ratio Sensor) tells the engine control module how much oxygen is in the exhaust stream between the engine and the Catalytic Converter. The Oxygen Sensor's signal is supposed to fluctuate a minimum of 10 times per second within a specified range. If the engine's control module (PCM) determines that the Oxygen Sensor is not fluctuating throughout the normal range, the PCM will set code P2195.

P2195 Symptoms

• Decreased engine performance
• Increased fuel consumption

Common Problems That Trigger the P2195 Code

• Oxygen sensor failure
• Powertrain Control Module (PCM) failure
• Powertrain Control Module (PCM) software needs to be updated
• Wiring issue

Common Repairs Needed for the P2195 Code

• Oxygen Sensor Replacement