Question about 2004 Dodge Neon

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Getting a code #P0038

The code reader says :bank1 sens2 heater circuit high.Is this an o2 sensor if so is it the front or rear sensor?

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Bank #1 sensor 2 down stream that's after exhaust manifold! I would change both to assure fuel efficiency and economy and they are part of 80thousand to a 100 thousand km service that should be replaced if you replace just the 1 that is gone I guarantee the up stream bank 1 sensor 1 will go almost immediately shortly after save and do it right first time but it is your call these switches work together!!!!I would hope this helps you will need a 22mm wrench to get it off from passenger side under seat area under the car the wire is about3 feet long best to go OEM don't go universal to save 10 bucks you have to cut and join wires not a good seen they will short out eventually so go OEM plugs in perfect thats the way to go the wire snaps in to seat of inside of alternator have fun don't forget to disconnect battery to reset computer while installing!John/Toronto Canada

Posted on Jan 10, 2009

  • John Jon Jan 11, 2009

    Glad to see you made out well.John

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1 Answer

Where is the o2 sensor bank sensor 2 located on a 2005 dodge durango 4.7 engine I get an error code of P0038


P0038 HO2S Heater Control Circuit High (Bank 1 Sensor 2) It is located behind the catalytic converter, in the exhaust pipe . P0038 HO2S Heater Control Circuit High Bank 1 Sensor 2

Nov 01, 2015 | 2005 Dodge Durango

1 Answer

Code p0038 wont go away and i have replaced the 02 sensors twice on my 2006 kia sportage


Code 038 means the computer is getting a high voltage return in the heater circuit from the O2 sensor mounted after the catalytic converter. The O2 sensors have an internal heater to make them work as soon as you start the engine.
You would need to test the circuit to and from the sensor to find the real problem.

Nov 14, 2014 | 2006 Kia Sportage

2 Answers

Its not a P0300 it's P0032 and P0038


code p0032refers to heated oxygen sensor(HO2S) 1 bank 1-heater control--circuit high===causes --wiring short to positive--HO2S sensor--ECM
code p0038 refers to heated oxygen sensor(HO2S) 2 bank1 heater control --circuit high===causes --wiring shorted to positive --HO2S---ECM
It is most important that when installing /removing the sensor that the correct tool is used to prevent damage to the wiring for the sensors. Severely twisting the wires during installation/ removal will result in the causes for failure listed.

May 27, 2014 | Chrysler PT Cruiser Cars & Trucks

1 Answer

Mine is a P 0032 and P 0038


upstream and downstream oxygen sensor heater voltages are too high, possible causes are
- bad o2 sensors
- shorted o2 wiring
- bad pcm
clear codes and determine if codes are hard(current)
if they are, unplug sensors, clear codes and re-scan to see if p0032 and p0038 appear.(there will be 2 to 4 other codes generated)if p0032 and p0038 are gone from the list, change both o2 sensors.
if p0032 and p0038 are still in the list, it is either wiring or pcm issue, use a meter to check for short from o2 connector to ground, with pcm unplugged..
Good luck, Rob

May 27, 2014 | Chrysler PT Cruiser Cars & Trucks

2 Answers

Check enegine light stay s on all the time, here are the codes im getting, if someone could tell me how to fix these that would be great. p0155 p0141 p0136 p0443 p1451 p0135 p0161 p1409


P0155: O2 Sensor heater Circuit Malfunction (bank2 ) Sensor 1.

P0141: O2 Sensor heater Circuit Malfunction (bank1 ) Sensor 2.

P0135: O2 Sensor heater Circuit Malfunction (bank1,Sensor1)

P0136: O2 Sensor Circuit Low voltage (bank1) Sensor 2.

P0443 : Evaporative Emission control System Purge control valve.

P1451: Eavporative Control System Canister vent solenoid Circuit Malfunction.

P0161: O2 Sensor Circuit Low voltage (bank2,Sensor2)

P1409: Electronic Vacuum Regulator (EVR) control circuit malfunction.

change the O2 sensors first,Then check the the EGR Vacuum regulator for any Malfunction. Good luck

Jan 14, 2011 | Ford Mustang Cars & Trucks

1 Answer

What is nissan quest code p0138/p0139


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

P0139 - Oxygen Sensor Circuit Slow Response (Bank1, Sensor2)

The Heated Oxygen Sensor (1 or 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)

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

Hope helps (remember to rate this answer).

Oct 11, 2010 | 2002 Nissan Quest

2 Answers

Can you tell me what codes 54 and 21 are on a 1995 caravan 3.0 please?


Hello..
Code 21: Is an oxygen sensor Code 54: Is a crank positioning sensor.
Hope this helps!

Dec 06, 2009 | 1995 Dodge Caravan

4 Answers

Engine light poo38


That is the oxygen sensor on bank 1 down by the cat converter.

Oct 21, 2009 | 2004 Jeep Liberty

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