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What does an o2 bank 2 code mean? Where is bank 2

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Bank 2 is the side cylinder 2 is

Posted on May 16, 2014

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Why does po131 keep returning after i replaced bank 1 02 sensor ? i clear codes and en about a week code returns data looks good


See causes
P0131 OBD-II Trouble Code Technical Description

Oxygen O2 Sensor Circuit Low Voltage (Bank 1, Sensor 1)
What does that mean? Essentially the same as P0136 and P0137, a P0131 code refers to the first oxygen sensor on Bank 1.
P0131 means the O2 oxygen sensor's voltage remained low for longer than 2 minutes. This, is interpreted by the ECM as a low voltage condition and sets the MIL. Bank 1 Sensor 1 is located in front of the catalytic converter.
Symptoms There may be no visible symptoms to the driver, other than the MIL (Check Engine / Service Engine Soon) illumination.
Causes A code P0131 may mean that one or more of the following has happened:

  • Faulty o2 oxygen sensor
  • Short to voltage on O2 signal circuit
  • High resistance or open on O2 signal circuit
Possible Solutions
  • Replace faulty sensor
  • Repair short, open, or high resistance on o2 signal circuit

Oct 01, 2015 | Cars & Trucks

4 Answers

What does code p0155 mean


P0155 = 2/1 O2 Sensor Heater Failure, Oxygen sensor heater element malfunction. logic dictates that you replace your O2 Sensor. DIY car obd2 code scanner online shopping

Jun 05, 2014 | 2004 Chevrolet Avalanche

1 Answer

1996 honda accord o2 sensor versus Catalytic converter codes p0135 and p0141


The fault code P0135 means O2 Sensor Heater Circuit (Bank 1 Sensor 1)
The code P0141 means O2 Sensor Heater Circuit (Bank 1 Sensor 2)

Launch X431 Connector

Aug 22, 2012 | 1996 Honda Accord

1 Answer

Where is fuel trim bank 2 located on bmw 2000 740i bmw


Are you getting the code P0173 That would mean that the ECU was unable to set the correct mixture for cylinders 4-6 (bank 2). I'd guess that the most likely culprit for that failure would be a failing pre-cat O2 sensor based on the code alone.The pre-cat O2 sensors are a critical part of the feedback loop for mixture control. When an O2 sensor ages enough it no longer delivers a valid signal to the ECU, which can cause this fault. The only other component that will affect only bank 2 is the catalytic converter for that bank. Given relative costs of O2 sensors and catalytic converters I'd change out both pre-cat O2 sensors and see if that helps. FYI: O2 sensors are usually staring to fail at 80-90K.

Dec 07, 2010 | 2006 BMW 750Li

1 Answer

CODE PO155 BANK2 SENSOR 1 WHERE IS THIS SENSOR LOCATED?


A code P0155 may mean that one or more of the following has happened:
* O2 Heater element resistance is high
* Internal short or open in the heater element
* O2 heater circuit wiring high resistance
* open or short to ground in the wiring harness

Possible Solutions:
* Repair short or open or high resistance in wiring harness or harness connectors
* Replace oxygen sensor (cannot repair open or short that occurs internally to sensor)


Oxygen sensors are always numbered like this:
Bank 1 sensor 1
Bank 2 sensor 1
Bank 1 sensor 2
Bank 2 sensor 2

Some manufacturers use a kind of shorthand that reads different, but means the same thing:
Sensor 1/1 or O2s 1/1
Sensor 2/1 or O2s 2/1
Sensor 1/2 or O2s 1/2
Sensor 2/2 or O2s 2/2

Bank 1 is always the side of the engine where cylinder number 1 is located and, of coarse, Bank 2 is the opposite side.
On a 4 cylinder engine, there is only 1 bank and it is always referred to as Bank 1.

Sensor 1 is always the upstream sensor (The one located BEFORE the catalytic converter)
Sensor 2 is always the downstream sensor (the one that is located AFTER the catalytic converter.

Hope helps (remember to rate this).

Oct 02, 2010 | 2002 Mitsubishi Montero

3 Answers

Reccieved P0141, P0147, P0340 as emission diagnostic trouble codes. What do these mean?


P0141....O2 Sensor Heater Circuit (Bank 1 Sensor 2)

P0142....O2 Sensor Circuit Malfunction (Bank 1 Sensor 3)

P0143....O2 Sensor Circuit Low Voltage (Bank 1 Sensor 3)

P0144....O2 Sensor Circuit High Voltage (Bank 1 Sensor 3)

P0145....O2 Sensor Circuit Slow Response (Bank 1 Sensor 3)

P0146....O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 3)

P0147....O2 Sensor Heater Circuit (Bank 1 Sensor 3)

P0340....Camshaft Position Sensor 'A' Circuit (Bank 1 or Single Sensor)

Sep 20, 2010 | 1997 GMC Sierra

1 Answer

Po137/po157 codes no activity


P0137 / P0157-Oxygen O2 Sensor Circuit Low Voltage (Bank 1, Sensor 2) refers to the second oxygen sensor on Bank 1. P0137 means the O2 oxygen sensor's voltage remained low for longer than 2 minutes. This, is interpreted by the ECM as a low voltage condition and sets the MIL. Bank 1 Sensor 2 is located to the rear of the catalytic converter and should produce an 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 front sensor. However, if the ECM senses the sensor is inactive, this code will set.

A code P0137 may mean that one or more of the following has happened:

Faulty o2 sensor Exhaust leak near the rear sensor
Plugged catalyst
Short to voltage on O2 signal circuit
High resistance or open on O2 signal circuit

Possible Solutions…
Replace faulty sensor
Repair 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

Mar 08, 2010 | 2000 Chevrolet Camaro

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

3 Answers

1999 chevelet suburn i need to no what this code means po161


P0161=O2 Sensor Heater Circuit Bank 2 Sensor 2,
oxygen sensor after converter on passenger side.

Dec 25, 2009 | 1999 GMC Jimmy

4 Answers

Dakota 4.7 P0161 code? What does it mean


P0161 02 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)
check the wiring to the bank 2 sensor, that is the one behind the catalytic converter on the opposite side from the bank where #1 cylinder is located, see firing order diagram below.
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Apr 30, 2009 | Dodge Dakota Cars & Trucks

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