I just failed my an emissions test with a fault code p0401: exhaust gas recirculation flow insufficient detected. Should I replace the EGR valve or try a different approach?

got a po139;o2 signal slow.bank #1 sensor #2.cleared codes.ok so far.did quick check of signal ok. refresh my old age memory. u look at the engine standing in front of …

I have a chevy Tahoe 1997 i have replace the oxigen sensor and the catalizador of the chevy i have remove it but the check engine still ligth up and the computer …

Vehicle stalls on deceleration. Computer codes are 14 and 66.
Auto mechanics tested computer and said it was transmission solenoid. Transmission mechanics said nothing wrong with solenoid. Original mechanics tested again …

I have 2005 E350 Check engine light came on a smoke test was done diag. testdetected small leak in evap system. found out solenoid needs replaced. Can someone tell me …

1997 Honda Accord 4-cyl VTEC engine, Engine light on, Autozone diagnostics performed. Errors: P0401, P0171, P0453. Got any ideas?

Hello,
I  have service engine soon light, CarMD diagnostic tool shows OBD P0130 & P0171.  They have been on and off for about eight months now.  Every 30-40 miles the SES disapears then  shows …

I have a 1997 toyota camry check engine light is on, i hooked it up to computer and am geting a code for fuel/air sensor where is it located so …

The check engine light is on still after I replaced both bank 1 & 2 O2 sensors. Is there a bad fuse that is keeping the engine light on?

When I start my car It idles around 1,000 rpms and when it tries to go past 2,000 rpms it jolts till the check engine light comes on I did …