Question about 1997 Jeep Grand Cherokee

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Sensor oxigen jeep cheroke 2003 dtc po155 and poo51

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Hi this is what the codes read
p0155 can be ECM, wireing to the H020s

p0051 can be ECM wireing short to eath or H020s sensor

cheers jay

Posted on Jun 24, 2009

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I have a 99 jeep grand cheroke lerdo it when it


no engine type stated (options new) so no exact answers ever.
Generic answers. USA>
ever get a tune up this DECADE?
loss of power, hot.only.
misfiring? is it>?
does the scan tool show the MISFIRE codes, DTC P030x?
no its not the map sensor. why blame a very reliable part first.
why pick the most expensive parts first.
why not just a $1.49 spark plugs, or new wires.

spark be first. good , hot , reliable spark by any means.
if spark is bad, all the fuel on earth is useless. (otto cycle engines "gas")

Sep 30, 2014 | 1999 Jeep Grand Cherokee

1 Answer

Po155


Looks like you already have this:

http://www.obd-codes.com/p0155

Mar 31, 2014 | 2004 Jeep Grand Cherokee

1 Answer

Code po155


replace oxygen sensor bank 2 sensor 1

Mar 28, 2014 | 2003 Chevrolet S-10

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Trouble codes for 2003 Chevy Blazer


Code 155 is for a problem with the heater circuit in the O2 sensor for bank two. Bank two is on the side with cylinder number two.
Usually the sensor is faulty, but the heater circuit would need to be checked to be sure. The sensor has a built-in heater to get it hot quickly after starting the engine.

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1 Answer

2003 GMC Sonoma 81000 miles 4.3l engine PO155 error code. I cleared it, but it came back 4 days later while driving around town. Should I replace the sensor?


CODE PO155 - HO2S 21 BANK 2 SENSOR 1 HEATER CIRCUIT MALFUNCTION CONDITIONS.CHECK O2 SENSOR FUSE AND WIRING CRCUIT BEFORE BUYING A NEW HO2S.IF SENSOR BAD REPLACE IT.THEN YOU CAN CLEAR THE CODE.

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COULD BE BLOW FUSE.FAULTY TURN SIGNAL SWITCH OR FAULTY TURN SIGNAL FLASHERS WHICH IS LOCATED FUSE / RELAY BOX JUST LEFT OF THE STEERING COLUMN.

Dec 05, 2010 | 2003 Jeep Grand Cherokee

2 Answers

Location of the map and oxygen sensors?


MAP is normally on the throttle body. O2 sensors are always on the exhaust pipe, one near where the pipe attaches to the exhaust manifold the other back near the catalytic converter.

Jul 29, 2010 | 1998 Jeep Grand Cherokee

2 Answers

Mi camioneta gran cherokee 2003 4x2 me indica


Hicieron algo recientemente? Cambio de neumaticos, alineamiento, servicio de frenos? Cualquiera de esas acciones podria haber movido los sensores casualmente descalibrandolos. Estoy asumiendo qie son los sensores de velocidad, si fueran los TPMS quizas sea por alguna llanta con deficiente presion de aire con respecto a las demas.

Exitos!!!

Nov 23, 2009 | 2003 Jeep Grand Cherokee

1 Answer

What is most likely problem for code p1286


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Oct 20, 2009 | 2003 Jeep Grand Cherokee

1 Answer

Car shuts off while driving


Jeep models known for bad crank shaft position sensors. Check for spark when condition occurs, if no spark chances very good for a bad sensor.

Apr 25, 2009 | 1997 Jeep Cherokee Country

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