P0137 Oxygen Sensor Circuit Low Voltage B1S2
Description and meaning of DTC p0137
This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles. Although generic, the specific repair steps may vary depending on make/model. Essentially the same as P0136,P0137 refers to the second oxygen sensor on Bank1. P0137 means the O2 oxygen sensor's voltage remained low for longer than2 minutes. This, is interpreted by the ECM as a low voltage condition and setsthe MIL. Bank1 Sensor 2 is located to the rear of the catalytic converter and should producean output signal relative to oxygen storage capacity of the catalytic converter. This rear (sensor 2) sensor is less active than the signal produced by the frontsensor. However, if the ECM senses the sensor is inactive, this code will set.
p0137 diagnostic trouble code symptoms
There may be no visible symptoms to the driver, other than the MIL (Check Engine/ Service Engine Soon) illumination.
DTC p0137 - possible causes
A code P0137 may mean that one or more of the following has happened:Faulty o2 sensor Exhaust leak near the rear sensorPlugged catalystShort to voltage on O2 signal circuitHigh resistance or open on O2 signal circuitEngine running very rich or leanEngine misfire conditionFuel pressure very high or low - fuel pump or pressure regulator
How to fix OBD-II diagnostic trouble code p0137
Replace faulty sensorRepair exhaust leak near the rear sensor Check for restriction in catalyst and replace as necessary Repair short, open, or high resistance on o2 signal circuit