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Pcm trouble codes? How do you get them to clear?

How can you clear a trouble code from the pcm on a 2003 wrangler? I have code P0161 which is a malfunctioning 02 sensor. Once I get this replaced how to I get the code to clear?

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You can usually take to neares advance auto or autozone and ask them to clear check engine light and presto code gone

Posted on Apr 21, 2009

  • joe keller Jul 01, 2012

    or you can disconnect battery and wait 5 min then reconnect battery

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Where are theOBD O2 sensor heater code po161 for a 1998 chevy. Silverado v 6


That is P0161 (letter "P" and four numbers)
P0161 Oxygen O2 Sensor Circuit Low ( engine cylinder bank 2 sensor #2)
What does that mean? This diagnostic trouble code (DTC) is a generic powertrain code, which means that is applies to OBD-II equipped vehicles. Although generic, the specific repair steps may vary depending on make/model.
It basically means the PCM detected either an excessive current draw, or an open or short in the circuit powering the oxygen sensor's heater circuit. This is in reference to the Heated Oxygen Sensor (2) located rear of catalytic converter (Bank 2).
A code P0161 may mean that one or more of the following has happened:
  • HO2S heater power circuit open
  • HO2S heater ground circuit open
  • HO2S signal tracking (due to oil or moisture in the connector)
  • HO2S is damaged or has failed PCM has failed

Nov 29, 2016 | Cars & Trucks

1 Answer

P0123, p0155, p0306


Well it really doesn't matter much. I would probably clear the codes and see which ones come back first.
Code 123 is for the throttle position sensor signal being out of range. Could be the sensor or a wiring problem.
Code 155 is for a problem with the heater circuit going to O2 sensor bank 2 sensor 1. Thats on the side with cylinder two if you have a V6 engine. Could be the sensor but its usually the lack of power for the heater.
Code 306 is for loss of power from cylinder 6 which could be mechanical, fuel, or spark related.
The three codes are not connected to each other. And trouble codes are not a statement to replace parts, only what to test.

Feb 26, 2014 | 2003 Jeep Wrangler

1 Answer

Fault code p0161


code p0161 refers to intake manifold tuning valve --bank 1 circuit low===causes --wiring short to ground--intake manifold tuning valve

Jan 03, 2014 | 2003 Toyota Highlander

1 Answer

2002 jeep wrangler TJ Code issues PO300,3003,161


P0300 is a Misfire code
P3003 are you sure? or is it *P0303* (Cylinder 3 Misfire)?
P0161 the PCM detected either an excessive current draw, or an open or short in the circuit powering the oxygen sensor's heater circuit. This is in reference to the Heated Oxygen Sensor (2) located rear of catalytic converter (Bank 2).

Nov 01, 2013 | Cars & Trucks

1 Answer

2002jeep wrangler code po303, 161 and 300. had tune up, just changed spark plugs again still getting codes


P0161
It basically means the PCM detected either an excessive current draw, or an open or short in the circuit powering the oxygen sensor's heater circuit. This is in reference to the Heated Oxygen Sensor (2) located rear of catalytic converter (Bank 2). Symptoms There will likely be no obvious symptoms other than MIL illumination. Causes A code P0161 may mean that one or more of the following has happened: HO2S heater power circuit open HO2S heater ground circuit open HO2S signal tracking (due to oil or moisture in the connector) HO2S is damaged or has failed PCM has failed Possible Solutions Replace HO2 Sensor Repair open or short in power circuit Repair open or short in ground circuit Repair damaged connector due to tracking

As for the 0303 or the 0300 these are probably just side effects of the 0161 fault But the 0303 code means the Cylinder #3 misfired and the 0300 means that you have a bunch of random misfires going on.Make sure you go back over the engine and check all the wiring, you may have disconnected or busted a wire while changing plugs.

Nov 01, 2013 | 2004 Ford Taurus

1 Answer

P0161 CODE ON JEEP LIBERTY 2003


Posted by Anonymous on Jan 25, 2013
why post to 2013? ELIAS? why not start your own post.
and not mix, engine sensors with HVAC blower heaters. hark.
the OP never once stated cars drive line.
and matters 100%
my guess is a jeep liberty with 3.7L and 2.4L 4 banger.
the answers vary by engines.
so if 161, is set the heater in bank 2 is bad, rear OXY sensor.
O2 Sensor Heater Circuit (Bank 2 Sensor 2)
the pcm measures the heater current flow
when it reads zero the sensor is bad or the wire is cut.(or rusty)

guess 2, is that late poster thinks
P0161 codes are HVAC codes
no it is not.
P0 codes are USA federal base codes.
and are for smog not dash HVAC heaters.
nice guess but dead wrong.

in most cases the 02 sensors is just bad.
the heater inside it just burns open.
all do that , every one... not one lasts
the life of engine, ever.

here ill read it to you, the SM. for 3.7L V6
gas engine, USA book and car....

Trouble Code: P0161 (3.7L V6 VIN K Auto)
O2 (B2 S2) Slow Response

Number of Trips to Set Code: 1

CCM Details

Trouble Code Conditions:
ECT Sensor less than 147?F and BTS signal within 27?F of the ECT Sensor (cold engine), engine started, system voltage over 10.5v, engine running at idle speed for over 12 seconds, and the PCM detected the O2 signal was more than 3.0v for 30-90 seconds.

Possible Causes:

ASD relay output (power) circuit to the heater is open

O2 heater ground circuit is open or O2 signal circuit open

O2 heater element has high resistance, is open or shorted

PCM has failed

Jan 25, 2013 | 2003 Jeep Liberty

1 Answer

P0157,P0161


Both codes indicate a a low voltage on the post catalytic converter O2 sensor
Check the wiring to the sensor.
An exhaust leak could also cause these codes to set

Any of the following issues can cause the codes to set
Most likely is a bad connection or faulty O2 sensor
  • Air leaks in exhaust in front of o2 sensor giving false reading
  • Engine running excessively lean
  • O2 sensor connector damaged/corroded
  • O2 sensor signal circuit is shorted to ground
  • O2 sensor ground circuit is open
  • O2 sensor has failed (it may be contaminated with fuel or coolant)
  • PCM has failed

Aug 03, 2011 | 2003 Kia Sorento

1 Answer

I have 2003 Ford Escape V6 I have to codes that read p0141 and p0161 and the car misfires I need help with this problem


P0141=O2 Sensor Heater Circuit Bank 1 Sensor 2
P0161=O2 Sensor Heater Circuit Bank 2 Sensor 2,
the 141 code is a problem with the heated O2 sensor on the drivers side exhaust after the converter,
the 161 code is the same except it is on that passenger side exhaust after the converter.

Jan 23, 2010 | 2003 Ford Escape

2 Answers

Pcm trouble codes.


You can either use a auto scan tool to clear the code's, or you can unplug the battery negative cable, if you have a anti-theft system you may have problem's after disconnecting the battery?

Apr 21, 2009 | 2003 Jeep Wrangler

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