P2270 JEEP O2 Sensor 1/2 Signal Biased Lean

Possible causes

– Faulty O2 Sensor 1/2
– O2 Sensor 1/2 harness is open or shorted
– O2 Sensor 1/2 circuit poor electrical connection
– Exhaust leak
– Faulty Powertrain Control Module (PCM)

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)

P2270 JEEP OBD Code Description

The Powertrain Control Module (PCM) detects that the sensor does not output a voltage greater than a calibrated high voltage and less than a calibrated low voltage within a specific time period

JEEP Related P2270 code