Question about 2007 Chevrolet HHR Special Edition

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The code I got read P2A01 suggested O2 sensor I changed sensor and light still came on My car is 2007 HHR 2.2

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

thutson66
  • 96 Answers

SOURCE: O2 sensor and EVAP issues

P0446 is Aux Emission Control
P0132 Fuel Air Metering

The Evap Canister is located in the fender well, if I am not mistaken and the B1S2 is the O2 sensor is the second O2 sensor on the left side of the engine if your looking at it from the front of the motor.

Posted on Aug 23, 2008

  • 1 Answer

SOURCE: CAR BATTERY FOR CHEVY 2007 HHR

Your battery is located in the rear under your cargo floor. Where most cars would hide a compact spare.

Posted on Dec 22, 2008

warlock61
  • 659 Answers

SOURCE: more 99 cougar problems

there is a fuse for the o2 heaters if one of the sensors blew the fuse they will all be out

Posted on Mar 01, 2009

  • 1 Answer

SOURCE: What is PO496 code? I've got a PO171B also, which I'm assuming is dirty an O2 sensor.

P0496= EVAP Emission High Purge Flow Fault. Now what that means, I don't know. I am having the same exact problem with my 2006 Cobalt LT.

Posted on Aug 13, 2009

  • 28 Answers

SOURCE: Code P0141. O2 Sensor heater circuit fault (Bank1,

It is probably the sensor before the cat. if it has a heater. The heater circuit going bad is a common problem, it does not affect the way the car runs after it warms up, it is an emission device to heat the O2 sensor up quicker than the hot exhaust gas would. It should be replaced because it will keep your check engine light on and you would not be able to pass an emission test.

Posted on Oct 12, 2009

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2007 tahoe o2 sensor, installed new o2 sensor but engine light stays on. code says bad


which sensor was replaced
there are 2 sensors involved
one after the cat converter and one in the exhaust manifold /pipe before the cat converter
the code will read the same for both

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I have a 2007 chevy impala, my engine code is reading p2a01 im wondering where exactly the location of this 02 sensor is?


I don't know what p2a01 is, but the O2 sensors are in the exhaust pipe before and after the catalytic converter.

Nov 23, 2015 | 2007 Chevrolet Chevrolet Impala LT

1 Answer

I have 2007 hhr and the code is p0171


This code is triggered by the first downstream (front) O2 sensor. The sensor provides a reading of the air:fuel ratio leaving the engine's cylinders, and the vehicles powertrain/engine control module (PCM/ECM) uses that reading and adjusts to keep the engine running at that optimum ratio of 14.7:1. If something is not right and the PCM cannot maintain the 14.7:1 ratio, but rather there is too much air, it triggers this code.

Read more at: http://www.obd-codes.com/p0171
Copyright © OBD-Codes.com

Feb 25, 2015 | 2007 Chevrolet Chevrolet HHR LT

1 Answer

Service Engine light code 431


Here is the definition for code 431.

P0431 MITSUBISHI Description The Engine Control Module (ECM) monitors the switching frequency ratio of heated oxygen sensors 1 (front O2 sensor) and heated oxygen sensors 2 (rear O2 sensor).

A three way catalyst converter (Manifold) with high oxygen storage capacity will indicate a low switching frequency of heated oxygen sensor 2. As oxygen storage capacity decreases, the heated oxygen sensor 2 switching frequency will increase.

When the frequency ratio of heated oxygen sensors 1 and 2 approaches a specified limit value, the three way catalyst malfunction is diagnosed. The problem could be the catalytic converter, one of the O2 sensors, or an air leak in the exhaust system.

Read more: http://engine-codes.com/p0431_mitsubishi.html#ixzz2EnHWZTpR

Dec 11, 2012 | 2007 Mitsubishi Outlander XLS

2 Answers

I have a 2007 Nissan Xterra. Check engine light is on, gas cap gasket has been replaced and the O2 sensors are being replaced tomorrow. Today it would hesitate/slow acceleration when at 40-60mph (2000...


if you have an O2 sensor faliure you will have a code for it. in fact youe exterra doesnt have O2 sensors. it has A/F sensor or "air/fuel sensor" if it went bad, than you will have a code for that sensor. What is the code number that you have?? need to start there.

Oct 09, 2011 | 2007 Nissan Xterra Off Road

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2007 tiburon po153 engine light 27000 miles?


P0153 O2 Sensor Circuit Slow Response - Bank 2 Sensor 1
For the 6 cylinder engine I got the above result which indicates an O2 sensor is bad or contaminated.

Would change the O2 sensor.

Oct 29, 2010 | 2007 Hyundai Tiburon

1 Answer

Engine light stays on after changing 02 sensor on my 2000 toyota tundra code read o2 sensor


did u change the right o2 sensor there is 2 sensors on bank1 and 2 on bank2.....upstream and down stream.....i had the same prob i changed the o2 senser to the other side to check and make sure it was the o2 senser....it took 4 o2 sensors before i got 1 that finally worked nd yes i was buying them brand new.....so change sides with it nd see if the code changes sides....and did u reset it with the code machine when u put the new 1 in?

Mar 28, 2010 | 2000 Toyota Tundra

2 Answers

1998 honda accord check engine light on code p0141


SECONDARY HEATED O2 SENSOR HEATER CIRCUIT FAULT SENSOR 2.

Jun 09, 2009 | 1998 Honda Accord

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