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2003 Chev Venture engine code p0140 o2 sensor.

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Replace the o2 sensor in the exahust system by the catlicytic convertor.

Posted on Oct 08, 2010

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Posted on Jan 02, 2017

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2003 Chev Trail Blazer. Codes: PO440, P151 & P1481 pull up. what are they?


P0440 = evaporative emissions system leak...check gas cap , hoses

P0151 = evaporative emissions systems sensors (O2 sensor, usually the O2 sensor between engine and catalytic converter on Cylinder Bank 2 (the side of the engine with the even-numbered cyclinders, usually left side from under hood if engine is mounted axially, rear of engine if it is mounted transversely)

P1481 = cooling fan speed

Mar 14, 2015 | 2003 Chevrolet TrailBlazer

1 Answer

Gm trouble code list


P0140 - 02 Sensor Circuit No Activity Detected (Bank 1 Sensor 2)
The causes for a P0140 code are few and unless the wire/s has been damaged, replacing the sensor is usually the smartest thing to do.

Jul 12, 2014 | 2003 Chevrolet Suburban 1500

1 Answer

Error code p1040


P0140 BMW P0140 BMW - O2 Sensor Circuit Low Voltage Bank 1 Sensor 2



Possible causes - Faulty Rear Heated Oxygen Sensor Bank 1
- Rear Heated Oxygen Sensor Bank 1 harness is open or shorted
- Rear Heated Oxygen Sensor Bank 1 circuit poor electrical connection
- Inappropriate fuel pressure
- Faulty fuel injectors
- Intake air leaks may be faulty
- Exhaust gas leaks

Replacing the Rear Heated Oxygen Sensor Bank 1 usually takes care of the problem
http://engine-codes.com/p0140_bmw.html

Apr 22, 2014 | 2006 BMW 325i

1 Answer

Code p0036,p0141,p0140


In order to get the light out you will have to replace the rear O2 sensor.

Mar 31, 2014 | 2001 Volkswagen Beetle

1 Answer

P0140 bank 1 sensor 2 1996 plymouth grand voyager minivan


Code 140 is for a problem with the O2 sensor bank one sensor two.
This sensor is behind the catalytic converter and tells the computer if the cat is working or not.
The code means the sensor voltage has not changed as often as it should.
Could be a faulty sensor, wiring harness problem, or other issue.
The sensor would need to be tested using a scanner.

Dec 14, 2012 | 1996 Plymouth Grand Voyager

1 Answer

Is the PCM the issue?


The P0140 code is caused by or is affected by the P0141 code. Fix the P0141 code first before worring about the P0140.
It is good you had the connections cleaned as oil contamination will cause a problem with the O2 system.
The "automotive electrician" should have performed a continuity test from the O2 sensor heater fuse to the PCM connector were the heater is grounded. The resistance value should be 35ohms. If the value is too high, the PCM will set the P0141 code. I would suspect you have an open circuit in either high or low side of the O2 sensor heater circuit.
Good luck.

Nov 17, 2011 | 2003 Cadillac CTS

1 Answer

1997 Mada MPV trouble code P0140


code P0140 = middle/right rear O2 sensor ( oxygen sensor ) no actvity

make sure right rear O2 sensor is pluged in and there is no exhust leaks if all looks ok replace the sensor.

Aug 31, 2011 | Mazda MPV Cars & Trucks

2 Answers

I have a dodge ram 2500 5.9 cummins showing a code of p0140. What's this code


From this website:

http://www.obd-codes.com/p0140

P0140 - 02 Sensor Circuit No Activity Detected (Bank 1 Sensor 2)

What does that mean?

The Powertrain control module (PCM) will provide a .45 volt reference voltage to the Oxygen sensor. When the O2 sensor reaches operating temperature, it will generate a voltage that will vary depending on the oxygen content of the exhaust. Lean exhaust generates a low voltage (less than .45V) and rich exhaust generates a high voltage (greater than .45V). O2 sensors on a specific bank marked as "sensor 2" (as this one is) are used to monitor emissions. A Three-Way Catalyst (TWC) system (catalytic converter) is used to control tailpipe emissions. 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. This is normal. If the signal received from rear (#2) O2 sensor indicates that the voltage has "stuck" between .425V to .474 V, the PCM determines this sensor is inactive and this code will set.

Potential Symptoms

Your check engine light(CEL), or malfuction indicator lamp (MIL) will be illuminated. There will not likely be any noticeable drivability problems other than the MIL. The reason is this: The rear or post catalytic converter Oxygen sensor does not affect fuel deliver(this is an exception on Chryslers). It only MONITORS the efficiency of the catalytic converter. For this reason, you will likely not notice any engine trouble.

Causes

The causes for a P0140 code are fairly few. They could be any of the following:

Shorted heater circuit in O2 sensor. (Usually requires replacement of heater circuit fuse in fuse block also)

Shorted signal circuit in O2 sensor

Melting of harness connector or wiring due to contact with exhaust system

Water intrusion in harness connector or PCM connector

Bad PCM

Possible Solutions

This is a fairly specific problem and shouldn't be too difficult to diagnose.

First, start engine and warm up. Using a scan tool, watch the Bank 1, sensor 2, o2 sensor voltage. Normally the voltage should switch slowly above and below .45 volts. If it does, the problem is likely intermittent. You'll have to wait for the problem to surface before you can accurately diagnose.

However, if it doesn

Apr 15, 2011 | Dodge Pickup Cars & Trucks

1 Answer

My car indicates check engine sigh with following two codes 1: p0139 2: p0140


Hi Garcha,

Both codes relate to O2 Sensor # 2

Code P0139: O2 Sensor Circuit Slow Response - Bank 1, Sensor 2
Code P0140: O2 Sensor Circuit No Activity Detected - Bank 1, Sensor 2

A faulty O2 sensor will mean incorrect signals will be sent to the EFI computer, causing erratic engine running.


Cheers,


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Jan 27, 2010 | Hyundai Motor 2002 Elantra

1 Answer

97 chevy venture code p0140


how do i change the o2 sensor?

Jun 03, 2009 | 1998 Chevrolet Venture Cargo

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