Check engine light came on...

Patman36 · 07-18-2004, 01:46 PM

Car has 239 miles on it. Only thing I have done is fill the car up with gas (dealer forgot to provide full tank of gas) last night. And yes I did screw the cap on tight enough.

Any diagnostic screen that will let me see what the problem is?

Patrick

eg239 · 07-18-2004, 02:01 PM

Could be just a coating on the catalytic converter burning off (there are posts about that somewhere around here). Either way, take it to the dealer just to have it checked on.

**efusco** · 07-18-2004, 02:09 PM

No, don't take it to the dealer yet. Go out, drive it at hwy speed for about 50 miles or so and see if it burns the crud off of the O2 sensor. That should take car of it.

If it does not, THEN go to the dealer. This is the single most common problem in the first few hundred miles of getting the car.

Patman36 · 07-18-2004, 06:17 PM

I have since driven it about 40 miles (highway and city). The light went off and then came on again a bit ago. I will check it out later to see what is up with it. Otherwise, I'll go introduce myself to the dealer

I appreciate everyone's advice. I got thumbs up from a guy today... he mouthed "cool car."

Patrick

jamarimutt · 07-18-2004, 06:24 PM

Follow Evan's advice... drive it a while longer before going to the dealer.

Frank Hudon · 07-18-2004, 06:50 PM

the problem involves the computer getting a working signal from the O2 sensor in a predetermined amount of time, in the order of 1/3 to 3/4's of a minute after start up. If the heater in the sensor can't bring the unit to temp fast enough it set's the MIL. The crud helps insulate the sensor from the flow of exhaust gas and this allows the sensor to not produce proper signal fast enough. The code remains in the computer data stream for 40 starts after the MIL light goes out or the code reset, after 40 cycles the code is erased from the computer.

daniel · 07-18-2004, 09:51 PM

I've never heard of this happening after 239 miles. usually it's in the first 100 miles, no? I've also never heard of it going out and then coming back on again.

I say, take it to the dealer. If it's the O2 sensor, you've lost nothing but the trip to the dealer. If it's something more significant, it needs to be fixed.

**efusco** · 07-18-2004, 10:47 PM

Daniel's probably right, at this point. It did seem a little late, but probably within the range that this could happen. But, if you put on an additional 40 miles of relatively 'open' driving and it went off, but then came back on then there's a chance of something else going on.

I'd still bet it's not serious, but it's worth making an appt. to have it checked. If for no other reason than to have the code checked to confirm and to give yourself a little peace of mind.

enerjazz · 08-11-2004, 08:24 AM

My check engine light came on at 511 miles. Since the car was still operating normally, I checked here first and saw the sensor info and waited until 3 power cycles. Light went out - likely to be the sensor issue. Saved a trip to the dealer due to the shared information. Thanks.

07-18-2004, 01:46 PM	#1
Patman36 Join Date: Jul 2004 Location: Tulsa, OK Posts: 23 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	Check engine light came on... Car has 239 miles on it. Only thing I have done is fill the car up with gas (dealer forgot to provide full tank of gas) last night. And yes I did screw the cap on tight enough. Any diagnostic screen that will let me see what the problem is? Patrick

07-18-2004, 06:50 PM	#6
Frank Hudon Senior Member Join Date: Jan 2004 Posts: 4,144 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	the problem involves the computer getting a working signal from the O2 sensor in a predetermined amount of time, in the order of 1/3 to 3/4's of a minute after start up. If the heater in the sensor can't bring the unit to temp fast enough it set's the MIL. The crud helps insulate the sensor from the flow of exhaust gas and this allows the sensor to not produce proper signal fast enough. The code remains in the computer data stream for 40 starts after the MIL light goes out or the code reset, after 40 cycles the code is erased from the computer. __________________ You can quote me on this, People who drive vehicles that idle at a traffic light, are idiots. mine 2k3 avg. 5.36 for 46,915Km Best tank 4.4L per 100K 64.2 Imperial 53.4 U.S. gallon, MiniScanner, SilverStars, block heater, winter lips, in as of Oct 15, out on April 25. In again on Sept. 21st. her's 2k4 "B" avg. 6.01 for 42,317 Km Best tank 4.02L per 100K, CAN-view with OBD11 module and flashloader, SilverStars, 06 Chrome grill bar, Michelin HydroEdge, upper and lower grill blocker,upper out as of April 7, lower out on April 28. In again on Sept 21st.

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07-18-2004, 02:01 PM	#2
eg239 Join Date: Apr 2004 Location: Manchester, NH Posts: 73 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	Could be just a coating on the catalytic converter burning off (there are posts about that somewhere around here). Either way, take it to the dealer just to have it checked on.

07-18-2004, 02:09 PM	#3
efusco Troll Slayer Join Date: Nov 2003 Location: Nixa, MO Posts: 14,229 My Car: 2004 Prius Package: #9 Nominated 1 Time in 1 Post TOTM Awards: 0 Friends: 24	No, don't take it to the dealer yet. Go out, drive it at hwy speed for about 50 miles or so and see if it burns the crud off of the O2 sensor. That should take car of it. If it does not, THEN go to the dealer. This is the single most common problem in the first few hundred miles of getting the car.

07-18-2004, 06:17 PM	#4
Patman36 Join Date: Jul 2004 Location: Tulsa, OK Posts: 23 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	I have since driven it about 40 miles (highway and city). The light went off and then came on again a bit ago. I will check it out later to see what is up with it. Otherwise, I'll go introduce myself to the dealer I appreciate everyone's advice. I got thumbs up from a guy today... he mouthed "cool car." Patrick

07-18-2004, 06:24 PM	#5
jamarimutt Join Date: May 2004 Posts: 972 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	Follow Evan's advice... drive it a while longer before going to the dealer.

07-18-2004, 09:51 PM	#7
daniel Cat Lovers Against the Bomb Join Date: Feb 2004 Location: Spokane, WA Posts: 9,147 My Car: 2004 Prius Package: #6 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	I've never heard of this happening after 239 miles. usually it's in the first 100 miles, no? I've also never heard of it going out and then coming back on again. I say, take it to the dealer. If it's the O2 sensor, you've lost nothing but the trip to the dealer. If it's something more significant, it needs to be fixed.

07-18-2004, 10:47 PM	#8
efusco Troll Slayer Join Date: Nov 2003 Location: Nixa, MO Posts: 14,229 My Car: 2004 Prius Package: #9 Nominated 1 Time in 1 Post TOTM Awards: 0 Friends: 24	Daniel's probably right, at this point. It did seem a little late, but probably within the range that this could happen. But, if you put on an additional 40 miles of relatively 'open' driving and it went off, but then came back on then there's a chance of something else going on. I'd still bet it's not serious, but it's worth making an appt. to have it checked. If for no other reason than to have the code checked to confirm and to give yourself a little peace of mind.

08-11-2004, 08:24 AM	#9
enerjazz Senior Member Join Date: Feb 2004 Location: Fairview, TX Posts: 161 My Car: 2004 Prius Package: #3 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	My check engine light came on at 511 miles. Since the car was still operating normally, I checked here first and saw the sensor info and waited until 3 power cycles. Light went out - likely to be the sensor issue. Saved a trip to the dealer due to the shared information. Thanks.