Check engine light

[cmourikis]

The verdict: Same as the others. Gross Evap Leak, Engine code P0455.
"tightened fuel cap".

Cant be serious! I think i know how to tighten a fuel cap. Regardless, we will see if this causes indigestion for the life of the car. The worst part was that they made me wait almost 2 hours, thanks STAMFORD.

Anyone else with this issue?

 

[Kansei]

Hmm that's a weird one. Maybe the way the cap is designed it is weird and makes you think it is tight when it isn't? Or maybe it sorta threads on if it is crooked so you think it is on but it isn't.

 

[080669]

Gross Evap Leak, Engine code P0455.
"tightened fuel cap".

Anyone else with this issue?

I think yours makes the 3rd one with this issue in these forums. I always tighten the gas cap a few turns after it starts clicking.

Since really all they did was reset the computer, I suspect there may still be an underlying issue out there.

 

[cmourikis]

you better believe im going to be tightening the sh*t out of it every time now. We'll see if this happens again or leads to something else. The guy mentioned something about "techline" - I guess they make the cap or the gas system... not sure. I imagine we will hear more about this as more CX7's hit the road.

 

[Glowspeedp5]

The verdict: Same as the others. Gross Evap Leak, Engine code P0455.
"tightened fuel cap".

Cant be serious! I think i know how to tighten a fuel cap. Regardless, we will see if this causes indigestion for the life of the car. The worst part was that they made me wait almost 2 hours, thanks STAMFORD.

Anyone else with this issue?

Sounds like a hyndia problem.......Parents hyndia do the same s***.....

 

[TheMAN]

wtf is a "hyndia"?

 

[Kansei]

Hyundai maybe? I know for a fact the sensor for the gas cap seal is really sensitive on a lot of newer Hyundais. My friend (RioRacer on here) has had his parent's XG350 CEL go on if I recall correctly because of just that.

 

[varek]

got back from the dealer

The dealer got the same reading in there computer with my cx7. Its an issue with the leak detection pump. they are going to schedule another service for a complete check up. They indicated that they will order the leak detection pump and install it.

 

[G-Papi]

you better believe im going to be tightening the sh*t out of it every time now. We'll see if this happens again or leads to something else. The guy mentioned something about "techline" - I guess they make the cap or the gas system... not sure. I imagine we will hear more about this as more CX7's hit the road.

The general rule as I understood it, and from seeing it referenced in other models manuals, was that you should tighten to three clicks. I don't think that going any further makes it any tighter. Maybe a sensitivity code in the CEL is something Mazda ought to do.

For the record, aside from turning off the light, what have service departments been doing to correct the problem, especially when they see that the cap has been properly replaced?

Also, does anyone know whether Autozone or Advance have upgraded software that includes this new model? If so, rather than going to the dealer, you could get the code read there.

 

[Rio Racer]

Hyundai maybe? I know for a fact the sensor for the gas cap seal is really sensitive on a lot of newer Hyundais. My friend (RioRacer on here) has had his parent's XG350 CEL go on if I recall correctly because of just that.

yea newer cars tend to have really sensitive gas caps. My kia rio also throws CELs if ya don't tighten the gas cap tightly along with my parents XG350. It happens alot when i go to NJ cause all the gas stations are full service ones by law so alot of times the bastards are in a hurry and forget to tighten the cap gap till it clicks.

 

[G-Papi]

AutoZone handheld unit is not updated to read the CX-7. Kept getting a "CONNECTION ERROR" They are supposed to be getting a larger unit that updates online regularly. Don't know yet whether it will have the CX-7 data in the database, though.

Was hoping that it would be an easy check and reset if the gascap issue stays troublesome. Doesn't make sense to have to go back to the dealer and either make an appointment, or wait.

I assume that Advance Auto uses the same handheld unit.

 

[varek]

Tell him there've been two loose gas cap and two for leaky detection pumps.

Oh, and if you don't have Autolock turned on (only available if you have the little credit card remotes), you might want him to do that while you're hooked up to the computer. I think when you close the door, you hear one beep and it's primed. Then if you walk like 5 feet away, you hear a beep again and it's locked.

I RECEIVED A CALL FROM THE LOCAL MAZDA DEALER. THEY STATED THAT THEY DID NOT HAVE TO REPLACE THE LEAK DETECTION PUMP. THEY RE- PROGRAMED THE PCM UNIT. I ACTUALLY DO NOT KNOW WHAT THE PCM STANDS FOR, BUT I WILL ASK.

 

[Kansei]

^^ It's the car's computer. Glad it was a nice simple fix for you, and now you can get back to zoom-zooming. I really love the overall styling of the CX7.. just gotta convince my dad to get one now haha

 

[stangmatt66]

This leak detection pump error sounds very much like the problem that affected early RX-8s (mine included). In the end it was deemed the detector was too sensitive. A few trips to the dealer for CELs and a software upgrade to change the sensor calibration, the problem went away.

 

[Ladyspeed6]

The same thing happened to my MS6. I had the CEL come on a few different times. Each time it said loose gas cap. I know that sucker was on tight. They replace the sensor the 3rd time, and it's been fine ever since!

 

[G-Papi]

In all of this, has anybody found anybody other than the dealer who has the software to read the CX-7?

 

[varek]

^^ It's the car's computer. Glad it was a nice simple fix for you, and now you can get back to zoom-zooming. I really love the overall styling of the CX7.. just gotta convince my dad to get one now haha

Yes the dealer indicated that the mazda pcm/flash is like an upgrade computer patch that calibrates the area that has the ecountered problem.(glare)

 

[Zoombee]

Had my "first" CEL at 250 Odo miles, 48 hours after I purchased my CX-7. I took it back and was told a P00455 code - gas cap not tight! Need to turn at least 3 clicks. The kid at the dealership I purchased from was the one that filled the tank. So when I filled the tank, I clicked it 5-6 times. Sure enough the CEL light came on again approx 48 hours after fill up. Took it back to the dealer and said it was another P00455 code. They tested the emission sensor like I've read on this thread but they couldn't find anything and they couldn't get the CEL light to come on for them. I told them I'll bring it back 46 hours after my next fill up, then maybe the light will come on for them!

 

[stangmatt66]

Had my "first" CEL at 250 Odo miles, 48 hours after I purchased my CX-7. I took it back and was told a P00455 code - gas cap not tight! Need to turn at least 3 clicks. The kid at the dealership I purchased from was the one that filled the tank. So when I filled the tank, I clicked it 5-6 times. Sure enough the CEL light came on again approx 48 hours after fill up. Took it back to the dealer and said it was another P00455 code. They tested the emission sensor like I've read on this thread but they couldn't find anything and they couldn't get the CEL light to come on for them. I told them I'll bring it back 46 hours after my next fill up, then maybe the light will come on for them!

Don't worry, this is the same thing that happen with the first batches of RX-8s. Mazda will come up with a ECU software update to correct the problem. Rx-8s went through at least 3 updates before the problem dissappeared.

 

[Zoom49]

In all of this, has anybody found anybody other than the dealer who has the software to read the CX-7?

Yes G-Papi I have a scanner that reads the CX-7. The CX-7 uses the new "Can Bus" protocol. This new high speed bus allows much faster processing speeds for the ECU. This will become the new standard for automotive computer communication for all manufactures. One of the first vehicles to use this new architecture was the Mazda RX-8. There are now at least 50 engines which use this type of communication including engines from
Ford, GM, Volvo and others. Only scanners introduced in the last year or so can communicate with "Can" vehicles. My scanner is the Actron CP9145 which I got at Pep Boys about a year ago for approx $200. Hooked it up to our CX-7 tonight and could read 93 engine parameters including rpm, load, advance, coolant temp air inlet temp intake vaccum or PSI as well as a host of other values. Your passanger can read live data while driving. Check it out here http://www.actron.com/product_detail.php?pid=16150
Any new scanner that reads "Can" will work. Have fun with your CX-7