Iknow this will be a simple answer and i fell kinda sheepish for asking but i dont know so hopefully you all dont mind putting up with me.

On an OBD 2 system when checking the engine codes the light flashes on your dash it either flashes in long or short flashes. My only experience is with non-obd systems where the long flashes count as 10's and the short ones as1's. Is this the same with OBD 2?

If so, when i look at the code list to see what they mean there are codes that go into the thousands, how would it register codes that high???

Any help would be appreciated.

 

Same thing with OBD 2, these are the codes that the flashes give you:

1 O2A - Oxygen sensor #1
2 O2B - Oxygen sensor #2
3 MAP - manifold absolute pressure sensor
4 CKP - crank position sensor
5 MAP - manifold absolute pressure sensor
6 ECT - water temperature sensor
7 TPS - throttle position sensor
8 TDC - top dead centre sensor
9 CYP - cylinder sensor
10 IAT - intake air temperature sensor
12 EGR - exhaust gas recirculation lift valve
13 BARO - atmospheric pressure sensor
14 IAC (EACV) - idle air control valve
15 Ignition output signal
16 Fuel injectors
17 VSS - speed sensor
19 Automatic transmission lockup control valve
20 Electrical load detector
21 VTEC spool solenoid valve
22 VTEC pressure valve
23 Knock sensor
30 Automatic transmission A signal
31 Automatic transmission B signal
36 traction control found on JDM ecu's
41 Primary oxygen sensor heater
43 Fuel supply system
45 Fuel system too rich or lean
48 LAF - lean air fuel sensor
54 CKF - crank fluctuation sensor
58 TDC sensor #2
61 Primary oxygen sensor
63 Secondary oxygen sensor
65 Secondary oxygen sensor heater
71 random misfire cylinder 1
72 random misfire cylinder 2
73 random misfire cylinder 3
74 random misfire cylinder 4
80 Exhaust Gas Recirculation insufficient flow detected
86 ECT Sensor (Engine Coolant Temperature) circuit range / performance problem
90 Evaporative Emission Control System leak detected in the fuel tank area
91 Fuel Tank Pressure Sensor low input
92 Evaporative Emission Control System insufficient purge flow

(Taken from Jason's stickied thread)

 

Thanks, this is great.

The only thing is that one of the codes i am getting is 18 and i dont see that on this list.

Does anyone know what code 18 is???

Thanks.

 

couldnt find 18 in my helms

 

How are you counting the flashs so quick? Eight flashes would confuse me. Could be 17 and VSS, speedo working?

 

Car wont start... cant check the speedo - it was working before though. I'll double check the code when i get home.

 

Is it cranking at all or anything? Just a solid CEL? I think we need a story here.

 

Alright... Story time, everyone gather round the camp fire.

98 Acura 1.6 EL Canadian Version (Same as 98 civic 4 door 1.6 vtec) wife's car, she went to start it one morning and wouldn't start. Car would crank over fine but no go.
No check engine light, bad noises or anything. So i start checking under the hood for loose connections or blown fuses but find nothing. Think it may be igniter so i get an extra distributor but this does not help. Check for spark and it is strong. Move on to checking fuel, remove fuel line from top of fuel filter and am used to it spraying everywhere but his time a small dribble comes out but thats it. I cycle the key to try to build up some pressure but none comes.
Apart comes the dash board to try to locate the fuel pump relay... cant find it. While i was looking i thought i might as well check for engine codes and that is when the codes 16, 18, 54, and 61 showed up.
Which brings me to here to try to find the meaning of the codes that so far has only brought more confusion.

question - why is there no pressure at my fuel filter even though i can hear the fuel pump working when i turn the key on?


Thanks.

 

Stupid question, enough gas in the tank? Prly is but have to ask. Leaking fuel, clogged fuel line before filter?

 

Gas tank is half full... but it is starting to look half empty

 

Well first, those codes you pulled were from awhile ago. So they shouldnt be a factor anymore. Check for leaks between the tank and the filter. Even though your tank reads full it doesnt account for after it leaves the tank. So fuel may be in the tank but not getting very far. Make sure your pump is putting out enough fluid.