2006 hhr 2.2 engine. Check engine light comes on when I turn air conditioning on. Car idles ruff when air is on. Gives code P 0420. I reset code and drove for two weeks without air on. Car ran great and no codes. I turned air on and P0420 code came on again and car idles ruff. Any ideas. Thx

Asked by Jul 01, 2017 at 04:21 PM about the 2006 Chevrolet HHR LT

Question type: Maintenance & Repair

No answers yet

Your Answer

Chevrolet HHR Experts

  • #1
    Tom Demyan
    Reputation
    920
  • #2
    Js08016
    Reputation
    530
  • #3
    Zachary Pilalas
    Reputation
    480
View All

Related Models For Sale

Used Chrysler PT Cruiser
3 Great Deals out of 90 listings starting at $3,295
Used Chevrolet Equinox
109 Great Deals out of 4,769 listings starting at $138
Used Chevrolet Impala
72 Great Deals out of 928 listings starting at $1,900
Used Chevrolet Malibu
104 Great Deals out of 2,259 listings starting at $2,500
Used Chevrolet Silverado 1500
174 Great Deals out of 10,673 listings starting at $2,500
Used Chevrolet Colorado
14 Great Deals out of 1,317 listings starting at $1,999
Used Dodge Caliber
42 Great Deals out of 296 listings starting at $1,688
Used Honda Civic
316 Great Deals out of 4,078 listings starting at $1,494
Used Chevrolet Cobalt
35 Great Deals out of 307 listings starting at $998
Used Chevrolet Corvette
707 listings starting at $4,450

Used Cars For Sale

2011 Chevrolet HHR For Sale
7 listings starting at $5,995
2010 Chevrolet HHR For Sale
9 listings starting at $4,500
2009 Chevrolet HHR For Sale
8 listings starting at $1,977
2008 Chevrolet HHR For Sale
8 listings starting at $5,900
2007 Chevrolet HHR For Sale
7 listings starting at $2,290

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.