Question about 1999 GMC Yukon

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Po134 trouble code - 1999 GMC Yukon

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  • GMC Master
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Hi:
This code refers to the front oxygen sensor on Bank 1. Basically the oxygen sensor is inactive. Here's why:
The powertrain control module (PCM) provides a baseline voltage of about 450 mV on the oxygen sensor signal circuit. When cold, the PCM detects the the internal resistance of the sensor is high. As the sensor warms up the resistance is lowered and it starts producing voltage based on the oxygen content in the exhaust. When the PCM determines that the time it took for the sensor to warm up is greater than one minute or that the voltage is inactive (not reading outside 391-491 mV it views the sensor as inactive or open and sets the P0134 code.Potential Symptoms
One or more of the following may occur:

  • Check engine light illumination
  • Poorly running/engine missing
  • Blowing black smoke
  • Poor fuel economy
  • Dying, stuttering
Causes A code P0134 may mean that one or more of the following has happened:
  • Bad O2 (oxygen) sensor
  • Bad heater circuit in the O2 sensor
  • Wiring or connector to the sensor frayed / broken
  • Blown heater circuit fuse
  • Holes in the exhaust system
  • PCM failure
Possible Solutions The most common fix is to replace the oxygen sensor. But that doesn't rule out the possibility of:
  • Rusted exhaust pipe
  • Inspect wiring & connector(s) for problems
  • Excessive amperage blowing heater fuse (still requires replacement of sensor but also replacement of blown fuse)
  • Replace PCM (only as last resort after all other possibilities are covered.

Posted on Dec 10, 2009

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  • GMC Master
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Code po134 is HO2S 11 bank 1 sensor 1 insufficient activity conditions.what its saying you have HO2S sensor failed.

Posted on Dec 10, 2009

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  • 1986 Answers

SOURCE: OBD/DTC '03 Dodge Grand Caravan 3.3L A604 Trans.

P0134 - bad O2 sensor, faulty wiring, blown heater circuit fuse, holes in exhaust, failed PCM

P1684 - Battery Disconnected Within Last 50 Starts

Posted on Sep 11, 2009

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1 Answer

Code PO134


Trouble Code: P0134

HO2S-11 (Bank 1 Sensor 1) Insufficient Activity

Possible Causes:


HO2S heater is damaged or has failedHO2S signal or ground circuit has a high resistance conditionHO2S signal circuit is open or shorted to system power (B+)HO2S has failed (i.e., it is silicon, water or fuel contaminated)PCM has failed.Sounds like you need a new oxygen sensor,Bank 1 Sensor 1 is located on the exhaust manifold, closest to the front.Here's a link to the firing order,bank one is cylinder one side.Here's the part you need,here's how to replace.

Feb 15, 2013 | 2002 Pontiac Grand Prix

1 Answer

My jetta 2000 vr6 manual And I have this code PO300, PO303, PO304, PO134 ,PO341 iwant know how I can fix this code ok thamks


this is an obd2 code trouble table, it can help you understand the meaning of code.
for p0300, you can go here.
for p0303,you can go here.
for p0304,you can go here.
for p0134, you can go here.
for p0341, you can go here.
hope help.

Jul 21, 2011 | Volkswagen Jetta Cars & Trucks

1 Answer

8/2009 computer programming failed, threw a rod and I replaced the engine in my 2001 Nissan Pathfinder. No failsafe mode apparently. I replaced both front O2 sensors and installed a new computer and had...


P0134 and P0154-o2 circuit not actively detected-bank 1 and 2, side 1

Nissan TSB Reference # NTB02-015 (in canada). Might be a similar TSB in the US-also this;

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It does sound like it is an electrical problem, possibly in a harness (damaged) or the ECM had major issues that a reflash could not overcome.

Jan 08, 2011 | Nissan Pathfinder Cars & Trucks

2 Answers

I have a 2000 ss z28 with a code coming up po134 left bank is the left bank the driver side of car? i had 2 make the wire longer 2 fit a long tube header there are 2 dark brown wires if they where switch...


Yes. Left and right is determined from when you are sitting in the car. PO134 is o2 sensor insufficient activity. Bank 1, sensor 1. If you somehow got those wires switched, that would probably do it.

Mar 09, 2010 | 2000 Chevrolet Camaro

2 Answers

Cheek eng, light is on and it is giving a code po134 but the car is run good.


when the ceck engine light is on you will almost never feeel any difference in the way the car feels or runs your code indicates the following

O2 Sensor Circuit No Activity Detected Bank 1 Sensor 1
You should replace the O2 sensor that is in the exhaust manifold or exhaust pipe just off the engine and before the catalytic converter.

Nov 12, 2009 | Dodge Neon Cars & Trucks

2 Answers

How to fix po134 sensor


O2 Sensor Circuit No Activity Detected Bank 1 Sensor 1

the bank one sensor is either disconnected are faulty.

the bank one sensor is the sensor in the exhaust of the rear cylinder bank of the engine cylinders 1,2,3, the sensor is the one before the catalytic converter. U will need an O2 semnsor socket to remove it or in some cases a 7/8" open end wrench will do.

Oct 23, 2009 | 1996 Plymouth Grand Voyager

1 Answer

OBD/DTC '03 Dodge Grand Caravan 3.3L A604 Trans. P1684---PO134 Trouble codes


P0134 - bad O2 sensor, faulty wiring, blown heater circuit fuse, holes in exhaust, failed PCM

P1684 - Battery Disconnected Within Last 50 Starts

Sep 11, 2009 | 2003 Dodge Caravan

1 Answer

SERVICE ENGINE SOON LIGHT ON


you need to change the oxygen sensor. it will soon cause you problems. after you need to take it in to  erase the code.

Apr 20, 2009 | 1997 Chrysler Town & Country

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