Question about 2002 Nissan Pathfinder

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Nissan pathfinder -service engine soon light on

Took it to dealer, they found codes P1140,P1147,P0158,P0138.I can't afford to have them do it, any idea if there is a way to fix for less?

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ALL those codes at once ! When was it last in for service? Haven't recently filled up with gas somewhere different by chance? First thing I'd do is add some fuel additive with moisture remover, and system cleaner, and see what that does, if you can still drive vehicle without too much trouble. What & when exactly did all this start, and what is vehicle doing?

Posted on Jan 25, 2009

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Posted on Jan 02, 2017

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After fixing p0132 p0138 p0152 p0158 I erase codes after light comes back on

make sure you have erased the codes , if you are sure they have been erased , and they come back, the fault has not been fixed.

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2006 jeep cherokee have these codes p0031,p0138,p0141,p0158,p0161,p0455,p0456,p01281

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I have 2002 dodge dakota 3.9 california emissions it has 4 o2 sensors. It has a p0152, p0138, and p0158. How likely is it that all four sensors are bad?

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Nov 12, 2013 | Cars & Trucks

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Lots of Codes, where should I start?

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Oct 04, 2012 | 2002 Dodge Durango

3 Answers

P0138 code

P0138 - O2 Oxygen Sensor Circuit High Voltage (Bank1, Sensor2)

The Heated Oxygen Sensor (2) located rear of catalytic converter produces an output signal relative to oxygen storage capacity of catalytic converter. Ho2S 2 signal is less active than signal produced by front oxygen sensor. This code sets when HO2 Sensor voltage is greater than 999 mV for more than 2 minutes (time depends on model. Could be as high as 4 minutes)

Symptoms: There may be no noticeable symptoms except for MIL illumination. Possible high fuel pressure can over rich the system.

Causes: A code P0138 may mean that one or more of the following has happened:
* Faulty O2 sensor
* Short to battery voltage in O2 sensor signal circuit
* High fuel pressure (not as likely)

Possible Solutions: Here are some potential solutions:
* Replace O2 sensor
* Repair short to battery voltage in o2 sensor signal circuit

Hope helps (remember to rate and comment this).

Sep 15, 2010 | 2002 Jeep Grand Cherokee

1 Answer

My 2001 Pathfinder has an SES light with codes p1140, p0138, p0139... O2 sensors and a cam sensor... O2 sensor replaced, and the swapped the cam sensor with its partner on the other side... 150miles...

Possible mass airflow sensor. A cheaper way to get around paying for the super expensive 2001 Path part is to use the same year maxima sensor since they use the same motor :)

Jan 27, 2010 | 2002 Nissan Pathfinder

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