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What is a code po138 and po139 - 2005 Chrysler PT Cruiser

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  • cheap repair Sep 15, 2010

    did you happen to leave your gas cap off or not tightened properly? sometimes these codes will come up if the gas cap is not secured properly. If so secure cap and wait a few days for the codes to reset themselves. Otherwise; http://www.ptcruiserlinks.com/forum/tech...
    http://www.ptcruiserlinks.com/forum/tech...

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Hi im getting codes PO107/Po138 and Po139 on s40 volvo 2002 2.0t sport petrol is it best to change the map sensor first and see if that clears the other problems .


no dear, bcos P0107, EGR/Barometric Signal circuit is less than self-test minimum. ... P0138, Downstr Heated Oxygen Sensor circuit Voltage High - Bank No. ... P0180, Engine Fuel Temperature Sensor circuit - Electrical fault. .

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2002 mercury villager code po325 code po138 code po139


P0138 O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)
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think you just need a new o2 sensor

Nov 03, 2013 | Cars & Trucks

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do you have two o2 sensors after catalytic con.could be not good.

Mar 07, 2013 | Cars & Trucks

1 Answer

2005 ACCORD ERROR CODE P0139


po139 is a code for o2 sensor slow response bank 1 sensor2 which tells me you have a v6 engine and this sensor is located after the catalytic converter on the side of the engine that the #1 cylinder is on.

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1 Answer

96 Ram 1500, 5.9 litre. code PO138 sensor circuit


it will be the o2 sensor after the cat.. check the connections. the first bank should be the right side of the engine while sitting in the car. look at that side of the exhaust.

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2 Answers

PO138-PO139


P0138- o2 circuit high voltage, bank 1 sensor 2
P0129- 02 circuit slow response Bank 1 sensor 2
rear o2 sensor weak, replace it, will be the one after the caliltice converter.

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1 Answer

2000 dodge truck code po203 po204


p0203 injecter circuit malfunction cyl #3. p0204 injector circuit malfunction cyl#4. po138 02 sensor circuit,high voltage cylinder bank no.1,sensor no.2

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