P0420 Chevy Cobalt: Catalyst System Efficiency Below Threshold

This page is meant to help you troubleshoot the Chevy Cobalt P0420 trouble code. It covers Chevy Cobalt P0420 meaning, symptoms, causes, and possible solutions. In the Cobalt,  OBDII P0420 is often caused by a bad oxygen sensor, but there can be other causes as well. One of the most common trouble codes with all … Read more

P0171 Chevy HHR

One of the most common trouble codes with the Chevy HHR is the P0171 code. This code number references a number that is given to you when you plug your car into a OBDII scanner.   P0171: Fuel Trim System Lean Bank 1 HHR P0171 Code Defined P0171 is an OBDII trouble code. The code … Read more

P0420 Code Chevy

One of the most common trouble codes with all Chevy vehicles is the P0420 code. This code number references a number that is given to you when you plug your Chevrolet into a OBDII scanner.  It doesn’t matter which model you have, the P0420 Chevy OBDII code has the same meaning.   P0420: Catalyst System Efficiency … Read more

P0171 GMC Envoy

One of the most common trouble codes with the GMC Envoy is the P0171 code. This code number references a number that is given to you when you plug your car into a OBDII scanner.   P0171: Fuel Trim System Lean Bank 1 Envoy P0171 Code Defined P0171 is an OBDII trouble code. The code … Read more

P0700 Chevy Sonic

One of the most common problems with the Chevy Sonic is when it throws the P0700 trouble code. A trouble code is a code thrown out by an automatic transmission whenever it detects that there is an issue that needs your attention. P0700: Transmission Control System Malfunction In the case of the P0700, it is … Read more

Chevy Cruze P0496

One of the most common trouble codes with the Chevy Cruze is the P0496 code.  This code number references a number that is given to you when you plug your Cruze into an OBDII scanner. Related:  Chevy Cruze P1101 and P0171 Trouble Codes   Chevy Cruze P0496 Symptoms The P0496 code on a Chevy Cruze … Read more