What does fault code p0140 on an oxygen sensor mean?

What Does Code P0140 Mean? OBD II fault code P0140 is defined as “ Oxygen (0 2) Sensor Circuit – No Activity Detected (Bank 1 Sensor 2)”, and is set when the PCM (Powertrain Control Module) does not detect a signal voltage from the oxygen sensor.

What is the fault code for an oxygen sensor?

OBD II fault code P0140 is defined as “Oxygen (02) Sensor Circuit – No Activity Detected (Bank 1 Sensor 2)”, and is set when the PCM (Powertrain Control Module) does not detect a signal voltage from the oxygen sensor.

When did Bank 1 O2 sensor stop working?

I have a 2002 Chrysler T&C limited. In September 2012, squirrels chewed through the wiring to my bank 1 O2 sensor. After a quick and easy fix, there were no issues or codes. In February 2013, three error codes popped up (P0134, 0138, 0139), and the car was running sluggish and getting poor gas mileage.

What’s the PCM code on an O2 sensor?

3 replacements of O2 sensor and still have P0134 code. Now told it is the PCM – Maintenance/Repairs – Car Talk Community 3 replacements of O2 sensor and still have P0134 code. Now told it is the PCM

What is the diagnostic code for O2 sensor no activity?

P0140 is a diagnostic trouble code (DTC) for “O2 Sensor Circuit No Activity Detected (Bank 1, Sensor 2)”.

Where does the PCM use oxygen sensor 2?

The PCM uses the signal received from Oxygen sensor 2 (#2 indicates aft of catalytic converter, #1 indicates pre-converter) to read efficiency of TWC. Normally this sensor will switch between high and low voltage at a noticeably slower rate than the front sensor.

Why is the O2 sensor no activity in bank 1?

If there is no response from the O2 sensor for Bank1, Sensor, no response indicates that there is no change of voltage between 410 to 490 mV for over 74 seconds (from the fuel enrichment signals or fuel cut off as signaled by the ECM). The possibility of the ECM not working well inside the 02 circuits.