Question about 1996 Pontiac Sunfire

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Check engine light came on a 2002 pontiac sunfire 2.2 liter DOHC. Code was for a faulty oxygen sensor. Sensor was replaced and now I am wondering how to clear the code. Older cars aloud for disconnecting the battery. Any one know how to clear this code?

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Decided to go to a repair shop and have them clear it with a scanner.

Posted on Dec 20, 2008

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Code po172(loss of power) on 2002 pontiac sunfirer


Possible causes
- Faulty front heated oxygen sensor
- Ignition misfiring
- Faulty fuel injectors
- Exhaust gas leaks
- Incorrect fuel pressure
- Faulty Mass Air Flow (MAF) sensor
My bet would be dirty fuel injectors, Try putting fuel injector cleaner in your tank next time you fill up.

Sep 20, 2014 | 2002 Pontiac Sunfire

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Code p1137 2002 pontiac sunfire


Change O2 Sensor number 2 which is down stream after the cat. Low voltage during power enrichment sensor 2

Jun 03, 2014 | 2002 Pontiac Sunfire

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Oxygen Sensors


check for an oxygen sensor (HO2S) before the cat converter and a Sensor (O2S) after the cat converter . If you have two cats then there will be 2 sensors for each converter. The Ho2S is a heated sensor and is different to the O2S sensor.. Use the special sensor tool so that the wires are not damaged

Apr 21, 2014 | 2002 Ford Escape

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My 2002 sunfire uses alot of gas


Change the air cleaner filter first. Check the engine timing. Check injectors for worn nozzles. Check oxygen sensor operation.

Jan 24, 2014 | 2002 Pontiac Sunfire

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1997 Pontiac Sunfire 2.4 DOHC, 2 outside cylinders won't fire


One coil serves those two cylinders (no. 1 and 4), so try repllacing that coil.

Nov 10, 2012 | 1997 Pontiac Sunfire

1 Answer

I have check engine light on and whe i checked the code is p4029


P0429 Description The Engine Control Module (ECM) monitors the switching frequency ratio of heated oxygen sensors 1 (front O2 sensor) and heated oxygen sensors 2 (rear O2 sensor).



A three way catalyst converter (Manifold) with high oxygen storage capacity will indicate a low switching frequency of heated oxygen sensor 2. As oxygen storage capacity decreases, the heated oxygen sensor 2 switching frequency will increase.



When the frequency ratio of heated oxygen sensors 1 and 2 approaches a specified limit value, the three way catalyst malfunction is diagnosed.
Possible causes - Catalyst Heater Control harness is open or shorted
- Catalyst Heater Control circuit poor electrical connection
- Faulty Powertrain Control Module

Oct 19, 2012 | 2002 Mitsubishi Galant

2 Answers

P0138 and p0158


These codes, po 138 bank 1 sensor 2 shorted to voltage and code po158 means bank 2 sensor two shorted to voltage. these are the two rear oxygen sensors in the exhaust system. there two up frt and two in the rear, check the wiring on the two rear sensors, make sure that the wiring is not cut or stuck between metal. if the wiring is good then replace both rear sensors, when you get them ask for the left and right after the cat sensors. or bk1 s2 and bk2s2. after replacing them reset the computer. go to an auto parts sotre or if you have a code reader you can do it. hope this helps good day.

Feb 19, 2012 | 2004 Dodge Stratus

1 Answer

My 1999 pontiac sunfire 2.2 liters did not pass the e-test. I feel that something tells my computer to run rich at 2000 rpm. I changed the spark plugs and the air filter. After driving 200 Klm. the engin...


The code P0137 means that your downstream O2 sensor has low volts. A rich running engine makes the voltage go high, not low. If the upstream sensor is not reading a rich or lean condition, then you need to replace your downstream O2 sensor.

Dec 21, 2011 | 1999 Pontiac Sunfire

1 Answer

Oxygen sensor codes I have 2 codes PO133 and PO141 says possible defective sensor or faulty HO2S12 or poor connections


Well it could be the wiring too the sensor, a software issue that requires flashing the pcm or the sensor you purchased is not working too the same standards that the old one was. Did you use a one type fit alls 02 sensor that uses the old connector and you have to splice the wires? Read this info...


P0133 - Oxygen Sensor Circuit Slow Response (Bank1, Sensor1)

What does that mean?
This involves the front oxygen sensor on Bank 1. This code indicates the engine air fuel ratio is not being adjusted by the oxygen sensor signal or the ECM as expected to do so, or not adjusted as often as expected to do so once the engine is warmed or under normal engine use.

Symptoms:
You will likely not notice any drivability problems, although there may be symptoms.

Causes:
A code P0133 may mean that one or more of the following has happened:
* The oxygen sensor is faulty
* The wiring to the sensor is broken / frayed
* There is an exhaust leak

Possible Solutions:
The simplest thing to do is to reset the code and see if it comes back.

If the code comes back, the problem is more than likely the front Bank 1 oxygen sensor. You will likely wind up replacing it but you should also consider these possible solutions:
* Check and fix any exhaust leaks
* Check for wiring problems (shorted, frayed wires)
* Check the frequency and amplitude of the oxygen sensor (advanced)
* Check for a deteriorating / contaminated oxygen sensor, replace if necessary
* Check for inlet air leaks
* Check the MAF sensor for proper operation



P0141 - O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)

What does that mean?
This code means that the heated circuit in the oxygen sensor on bank 1 decreases time needed to enter closed loop. As the O2 heater reaches operating temperature, the oxygen sensor responds by switching according to oxygen content of the exhaust surrounding it. The ECM tracks how long it takes for the oxygen sensor to begin switching. It the ECM determines (based on coolant temp) that too much time elapsed before the oxygen sensor began operating properly, it will set P0141. See also: P0135 (Bank 1, Sensor 1).

Symptoms:
You will likely notice poor fuel economy the illumination of the Check Engine Light.

Causes:
A code P0141 may mean that one or more of the following has happened:
* open or short to ground in the wiring harness
* O2 heater circuit wiring high resistance
* O2 heater element resistance is high
* Internal short or open in the heater element

Note: Typically a failed catalytic converter does not cause this code. You're more likely to see a P0420 code for a failed converter.

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


Hope helps (remember rated and comment this).

Jul 01, 2010 | 2000 Pontiac Sunfire

1 Answer

2000 sunfire has p0336, p0340, p0130, where to


p0130 is an oxygen sensor code.
p0340 is your camshaft position sensor code
p0336 is your crankshaft position sensor code

as far as the p0130 code those usually are what i call neglected sensors that do not get replaced when they should be. this sensor is expensive but worth the money as it will help on fuel mileage.

on to the camshaft position sensor, i would start here with this. replace that sensor and when you are replacing it, inspect the sensor and make sure the electrical wires going into it are in good shape. after replacing those 2 sensors, go to a parts store who can erase your codes to turn the light off and then let us know if it comes back on and then we will go from there on the repair.

Aug 05, 2009 | 2000 Pontiac Sunfire

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