Question about 1996 Plymouth Voyager

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I went to get my car inspected and it was rejected because 2 codes showed up...P0743 and P0140...What are these codes

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The P0743 is torque converter clutch circuit electrical. The P0140 is O2 sensor circuit no activity detected (bank 1 sensor 2).

Posted on Sep 10, 2009

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2000 impala code p0140


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

Read more at: http://www.obd-codes.com/p0140
Copyright OBD-Codes.com

Best Regards,
JDB

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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.

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Where is the pressure control sensor 2001 ford windstar SEL?


From what I have read about those 2 error codes you are probably best off taking it to a transmission shop.
You'll find information about the P0743 code here http://www.obd-codes.com/p0743 P0743 is a generic error code for all Ford trucks. The P1747 is specifically for the EPC Solenoid Short Circuit
Electronic Pressure Control (EPC) Solenoid, which is inside the transmission. You have to drain the fluid and open the bottom cover pan. Replace the EPC and the filter at minimum; once you have it open you'll be able to find out more.
Good luck with this, it's not going to be a simple fix.

May 17, 2014 | 2008 Skoda Octavia 1.9

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

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

How to fix a code p0140 in a 95 gmc sonoma 2.2L


p0140 is oxygen sensor no activity bank 1 sensor 2.disconnect sensor and check for 12 volts power,5 volt reference,and ground.if you have all of this it is the sensor.i would say it is the sensor.

Jan 27, 2011 | GMC Sonoma 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,


"If this has helped you in any way, please rate this solution" :-)



Jan 27, 2010 | Hyundai Motor 2002 Elantra

2 Answers

P0743


P0743 is torque converter circut electrical. Could mean that the lockup solenoid is faulty or connections are bad.

Jul 27, 2009 | 2002 Honda Odyssey

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