Question about 1994 Geo Metro

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Which O2 sensor needs to be changed for a code 13?

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Front - nearest the engine.

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Posted on Nov 17, 2009

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Your Geo only has one O2 sensor, threaded into the exhaust, so that is usually what trips the 13 fault.

Posted on Nov 17, 2009


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Code 13 on a geo tracker is on and the O2 sensor is not that old

Code 13 is saying the O2 sensor is not responding as expected.
Possible causes are a faulty sensor, but also a faulty thermostat or idle speed higher than normal, among other things.
A mechanic would check engine temp and use a scanner to "read" the O2 sensor data flow.

Jul 07, 2012 | 1993 Geo Tracker

7 Answers

I have a 1990 cutlass ciera that has been giving me problems with turning off while I'm driving. I read the error codes 13, 22, 43. Any help on what they mean and what's going on?

Here is the Factory manuals definitions of the codes:
OBD1 fault code 12- System normal/ready. This means the system is able to deliver stored OBD1 fault codes in its memory, it is not a fault code.

OBD1 fault code 22- TPS sensor signal voltage low, this means either the Throttle Position Sensor is defective or the wiring to it like the connector, the sensor is the most common issue. The TPS is located on the throttle body of the engine.
OBD1 fault code 43- Engine spark knock sensor signal problem. This can be a defective connector at the sensor or water intrusion into the connector or corrosion of the pins inside the connector body. The Knock sensor is located on the side of the engine block, it screws into what would on earlier years would have been a engine block drain plug. You must get under the car to see it. If you go to and look the the parts up there will be pictures of the TPS and the Knock sensor. The prices at the site are some of the best I have found, and i really do check around, I buy ALLOT of parts! Good Luck and hope this information helps.

Oct 03, 2011 | 1990 Oldsmobile Cutlass Ciera

1 Answer

91 olds 88 Royale misses, pops and lacks Power after Repairing code 41 and 13. New Magnet and new O2 sensor. now giving code 13 again. runs Horribly Rough.

Check for a vacuum leak. 13 is oxygen? If so, it may be a leak. If not, it may be a bad plug. Have you changed anything? Tried to get a code?

Feb 23, 2011 | 1991 Oldsmobile 88

1 Answer

O2 senor rear how do u change it)?

O2 sensors normally don't require replacement to stop getting an O2 sensor code even on a 13 year old vehicle. They are an "indicator" to notify you that something is wrong. If the rear O2 sensor is causing a MIL light (idiot or engine light) you should check for an exhaust leak first (most common cause). If there is no exhaust leak before the sensor and the motor is running nearly perfectly with no bogging down in power and no loss of fuel mileage you can expect that the catalytic converter may be starting to fail and you are getting an incorrect exhaust mixture after the CAT. If that isn't the problem just try "swapping" a used O2 sensor from a junk yard before you spend any significant money on the sensor itself.

Feb 09, 2011 | 1998 Ford Explorer

1 Answer

Im trying to change my oxygen sensor bank sensor one and need to know where it located and if there is anything special i need to know about changing it.

What size engine is in this Grand Cherokee? You should be able to get a 13/16 wrench on the hex and remove it. If clearance is an issue, then an O2 sensor socket that is available at most auto stores will be required. I'll need an engine size for an exact location of this O2.

Dec 26, 2010 | 2001 Jeep Grand Cherokee

1 Answer

Have 98 ford contour, 2.0 DOHC, 4 cylinder. Got a P0141 code. changed wires, plugs, cleaned MAF, replaced both o2 sensors. What's else can this be, engine light still on. I drove for awhile to see if light...

You have an oxygen sensor code. This code by the way is not for a signal problem rather it is the heater part of the O2 sensor. Check fuse #13 to see if it is blown. This is a 30 amp fuse. If fuse is ok then put a meter on the two white wires on O2 sensor and check for 12V when the ignition is on. Your code is being tripped due to a heater malfunction and unless you determine if power exists you cannot go any further. Hope this helps

Dec 22, 2010 | 1998 Ford Contour

1 Answer

I have a 1985 olds calais my D code is printing # 13 , 33, 35 can u tell me what parts their refering to

Code 13 refers to the O2 sensor, the code 33 refers to the Map sensor, and the code 35 refers to the Idle Air Control Valve.

Nov 18, 2010 | 1985 Oldsmobile Calais

1 Answer

Obd code reads P1133. Replaced sensor 1 bank 1 sensor but still have a problem. Do I need to replace sensor 2 also???

What you need to do. is use the codes you get ,to look at a diagnostic chart,of possible causes for the codes.
If it is an O2 or any other sensor, you should perform some type of test,to determine,not only if their not working correctly,but what the system problem is ,that set the codes.
OBD2 Codes-do not tell you what to replace. They indicate a system malfunction. It is up to you to diagnose the issues.

If you believe you have a downstream O2 Sensor going,you most likely have a cat not far behind or it wouldn't be out of range and set the code

I would install a new cat and both sensors,on a 13 year old vehicle

Sep 30, 2010 | 1997 Pontiac Grand Am

1 Answer

I have a 1994 Pontiac Grand am, 2.3 L with DTC codes 13 and 45. I already replaced the O2 sensor. What else could it be? The 8th digit of the vin is 3.

45 is rich exhaust, 13 is o2 open short or ground. How long ago did you replace the o2? You may have got a bad one. Code 45, Does it seem that the engine is running rich?

Apr 22, 2010 | 1994 Pontiac Grand Am

1 Answer

92 Buick Le Sabre engine stumbling/hesitation

Have you checked fuel pressure? How about spark on all 6 cylinders? Maybe a coil?

Apr 12, 2009 | 1992 Buick LeSabre

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