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Old 05-02-2010, 11:06 PM
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Default 94 accord ecm code reading

Hi!

I'm aware of how the ecm codes work. But this one it dosen't seem right:

Long flash from the engine light at a constant interval, I'm not sure if thats a "10"...the flash is same duration has the pause.

The same with my d4 light, its a constant interval, but short flashes...so again not sure if thats a "1".

The car still runs fine. I've read ecm codes before...they are clear to read, but never i've seen these...

Has anyone ever had the same issue?
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Old 05-03-2010, 08:28 AM
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10 from the CEL is intake-air-temperature sensor. Look for loose/dirty/corroded connection or wiring problems; code 10 doesn't guarantee that it's the sensor itself that's bad.
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Old 05-08-2010, 05:56 PM
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Thanks for the info Jim,
I think the D4 blinking is only a reminder that something needs fix in the engine, it dosen't actually mean something specific. I did replace the air temp sensor with an oldie.

Today something new, after riding on the highway for awhile i stopped and it didn't want to start back again. I remember reading something about this when the engine gets too hot. I checked for codes and this time its..18?? Repair manual says there is no such code 18, and i can't find info on the net. Strange.

I let the fan do its work, 5 min later the car starts.

It also been has been stumbling on accelaration, i will check to see if the throttle body is clean.

Thanks again,
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Old 05-08-2010, 07:08 PM
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D4 is transmission code. Is your speedo working?
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Old 05-08-2010, 08:14 PM
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D4 or 'S' light flash codes;
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Old 05-08-2010, 08:52 PM
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Honda Codes OBD1 CEL flash
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
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Old 05-09-2010, 09:40 AM
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My Speedo works fine.

Thanks Honda dude but i dont see a code 18 in the post. This guy was having the exact same problem but no answer:

http://www.hondacarforum.com/honda-2...code-18-a.html

He's specifies "reduce power", i can't confirm that on mine but there is definitely stumbling on accelaration. Maybe there is a link there.

I already had changed the spark plugs. I will change the wires also, check the throttle body for clealiness and later get my fuel filter changed...the bottom bolt on that fuel filter is &#$@ to get to.

Thanks,
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Old 05-09-2010, 04:47 PM
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The stumbling was due to my old spark plug wires. I've replaced them and now its ok. I'll have to wait if my D4 will gave me a trouble code again since i had to unplug the negative battery cable thus erasing the ecu codes, to change the wires.

Thanks,
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