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Discussion Starter · #1 ·
tonight I saw the malfunction lights on when I was driving. I went to autozone, they said they stop this service 2/3 yr ago. it's getting very late, so went home and looked through the service manual, and couldn't find any info from it (this thick manual is useless at this point)

i think probably light on is due two things: the fuel cap is not right one because I bought a cap from walmart and it fit. the cap has been used for many weeks so far, but I have put the original cap back. 2nd possible cause is gasoline I used: I always went to shell station, but yesterday I went to 76 station. maybe i put dirty galsoline.

I browsered through this site, and found a few useful info, and i still have a few questions:
1. I am planning to buy a regular OBDII scanner, will scanner come with codes in its manual? if the code is telling me it is due to the bad O2 sensor or catalyc failure, are they easy to replace by myself?
2. do you think it will be okay to drive with check engine light on? so far I didn't feel anything wrong of this car.

many thanks
 

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One way or another, you've got to read the code. Until then it's all just useless conjecture.

Generic codes should be easy to find a decoder for. Here are Honda-specific codes:

P0010 Variable Valve Timing Control (VTC) oil control solenoid valve malfunction
P0011 Variable Valve Timing Control (VTC) system malfunction
P0101 Mass Airflow (MAF) sensor range/performance problem
P0102 Mass Airflow (MAF) sensor circuit low voltage
P0103 Mass Airflow (MAF) sensor circuit high voltage
P0106 Manifold Absolute Pressure (MAP) sensor range/performance problem
P0107 Manifold Absolute Pressure (MAP) sensor circuit low voltage
P0108 Manifold Absolute Pressure (MAP) sensor circuit high voltage
P0111 Intake Air Temperature (IAT) sensor circuit range/performance problem
P0112 Intake Air Temperature (IAT) sensor circuit low voltage
P0113 Intake Air Temperature (IAT) sensor circuit high voltage
P0116 Engine Coolant Temperature (ECT) sensor circuit range/performance problem
P0117 Engine Coolant Temperature (ECT) sensor circuit low input
P0118 Engine Coolant Temperature (ECT) sensor circuit high input
P0122 Throttle Position (TP) sensor circuit low input
P0123 Throttle Position (TP) sensor circuit high input
P0125 Engine Coolant Temperature (ECT) sensor slow response
P0128 Cooling system malfunction
P0131 Primary heated oxygen sensor (Primary HO2S) (sensor 1) circuit low voltage
P0132 Primary heated oxygen sensor (Primary HO2S) (sensor 1) circuit high voltage
P0133 Rear Air/Fuel Ratio (A/F) sensor (bank 1, sensor 1) circuit slow response
P0134 Air/Fuel Ratio (A/F) sensor (sensor 1) no activity detected
P0135 Primary heated oxygen sensor (primary HO2S) (sensor 1) heater circuit malfunction
P0137 Secondary heated oxygen sensor (secondary HO2S) circuit low voltage
P0138 Secondary heated oxygen sensor (secondary HO2S) circuit high voltage
P0139 Secondary heated oxygen sensor (secondary HO2S) slow response
P0141 Secondary heated oxygen sensor (secondary HO2S) (sensor 2) heater circuit malfunction
P0143 Third heated oxygen sensor (third HO2S) (sensor 3) circuit low voltage
P0144 Third heated oxygen sensor (third HO2S) (sensor 3) circuit high voltage
P0145 Third heated oxygen sensor (third HO2S) (sensor 3) circuit slow response
P1106 Barometric pressure circuit range/performance
P1107 Barometric pressure circuit low input
P1108 Barometric pressure circuit high input
P1121 Throttle position lower than expected
P1122 Throttle position higher than expected
P1128 MAP lower than expected
P1129 MAP higher than expected
P1149 Primary HO2S (Sensor 1) circuit range/performance problem
P1162 Primary HO2S (No. 1) circuit malfunction
P1163 Primary HO2S (No. 1) circuit slow response
P1164 Primary HO2S (No. 1) circuit range/performance
P1165 Primary HO2S (No. 1) circuit range/performance
P1166 Primary HO2S (No. 1) circuit heater system electrical
P1167 Primary HO2S (No. 1) circuit heater system
P1168 Primary HO2S (No. 1) circuit LABEL low input
P1169 Primary HO2S (No. 1) circuit LABEL high input
P1253 VTEC system malfunction
P1257 VTEC system malfunction
P1258 VTEC system malfunction
P1259 VTEC system malfunction
P1297 Electrical Load Detector circuit low input
P1298 Electrical Load Detector circuit high input
P1300 Multiple cylinder misfire detected
P1336 CSF sensor intermittent interruption
P1337 CSF sensor no signal
P1359 CKP/TDC sensor connector disconnection
P1361 Intermittent interruption in TDC 1 sensor circuit
P1362 No signal in TDC 1 sensor circuit
P1366 Intermittent interruption in TDC 2 sensor circuit
P1367 No signal in TDC 2 sensor circuit
P1381 Cylinder position sensor intermittent interruption
P1382 Cylinder position sensor no signal
P1456 Evap emission control system leak detected (fuel tank system)
P1457 Evap emission control system leak detected (control canister system)
P1459 Evap emission purge flow switch malfunction
P1486 Thermostat range/performance problem
P1491 EGR valve lift insufficient detected
P1498 EGR valve lift sensor high voltage
P1508 IAC valve circuit failure
P1509 IAC valve circuit failure
P1519 Idle air control valve circuit failure
P1607 ECM/PCM internal circuit failure A
P1655 SEAF/SEFA/TMA/TMB signal line failure
P1656 Automatic transaxle
P1660 Automatic transaxle FI signal A circuit failure
P1676 FPTDR signal line failure
P1678 FPTDR signal line failure
P1681 Automatic transaxle FI signal A low input
P1682 Automatic transaxle FI signal A high input
P1686 Automatic transaxle FI signal B low input
P1687 Automatic transaxle FI signal B high input
P1705 Automatic transaxle concerns
P1706 Automatic transaxle concerns
P1738 Automatic transaxle concerns
P1739 Automatic transaxle concerns
P1753 Automatic transaxle concerns
P1758 Automatic transaxle concerns
P1768 Automatic transaxle concerns
P1773 Automatic transaxle concerns
P1785 Automatic transaxle concerns
P1786 Automatic transaxle concerns
P1790 Automatic transaxle concerns
P1791 Automatic transaxle concerns
P1792 Automatic transaxle concerns
P1793 Automatic transaxle concerns
P1794 Automatic transaxle concerns
P1870 Automatic transaxle concerns
P1873 Automatic transaxle concerns
P1879 Automatic transaxle concerns
P1885 Automatic transaxle concerns
P1886 Automatic transaxle concerns
P1888 Automatic transaxle concerns
P1890 Automatic transaxle concerns
P1891 Automatic transaxle concerns

-30-
 

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Discussion Starter · #3 ·
do u think it is worth to buy the OBD2 scanner? will OBD2 give me a code if it is the loose cap?

thank you.
 

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Discussion Starter · #4 ·
one additional comment here. last later night, I found the code section is actually located under "fuel & emission" section. :grin:
so far I haven't found a code for loose cap.
 

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Go to an AutoZone or similar and have the code read for free before you plunk down the cash for an OBD-II reader. Having your own reader is a nice luxury, but unnecessary for most of us. I haven't used mine in almost three years (knock on wood).
 

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I think the "Fuel Cap" idiot light was new with the 2005 model year. '03 and '04 owners have to suffer the false "Check Engine" light.
 

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Discussion Starter · #8 ·
autozone no longer providered free scan service.
I borrowed a obd2 scanner from coworker, and the message shows
:"P0456, evaporative emission system leak detected. (very small leak)"

i checked it with service manual, and still not clear to me if it is the loose cap or not. have to wait and see.

thank you all for your replies. this site is very helpful.
 

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Is it possible for it to come on to remind you for your routine maintance? Mine has home on twice, most recently it blinked for 600miles and is now solidly on.
 

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autozone no longer providered free scan service.
I borrowed a obd2 scanner from coworker, and the message shows
:"P0456, evaporative emission system leak detected. (very small leak)"

i checked it with service manual, and still not clear to me if it is the loose cap or not. have to wait and see.

thank you all for your replies. this site is very helpful.
I've had that code come up every few weeks for the past year or so. I have a pc linkable obdII reader so I just clear it and wait for it to come back. I believe the leak was .002 inches of water so it is probably a glitchy sensor. I did replace my fuel cap just fer shiggles and I still get the code.
 

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... I have a pc linkable obdII reader so I just clear it and wait for it to come back. ...
I'm glad you said that. I have an edu-hunch this is why AutoZone no longer reads codes, at least in California.

My guess is that CARB finally caught-on to the concept that people were getting minor emissions error codes that didn't impede driving and having AZ clear them for free repeatedly, rather than taking it somewhere and paying real money to fix the problem.
 

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Thanks Lizzard, As I was waiting for a friend today I looked it too and guess i just always missed it some how. Now as for Auto Zone I went in today and asked about it while i was there. It is now illegal for them to give you the reading, but they sell them. Its a new law apparently in California. I dont have any more info than that, after he told me that some fools stole some stuff and the guy had to run after that. :-D

It flashes to notify you of an upcoming service being due. When it stays on it is telling you that you are due for service.

This is covered on page 70 of the owners manual.

If you don't have a manual you can read it on line here:

https://techinfo.honda.com/rjanisis/pubs/om/E10303/E10303MAINIDX.pdf
 
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