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'92-'95 Honda OBD I Diagnostic Codes

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Full list of OBD I Diagnostic Trouble Codes for your '92 - '95 Honda. If your Check engine light is on you may have a serious problem. Scan your codes and follow the links below to determine what the code means. Some shops will scan your codes for free. Autozone is one place that will give you the code number.

Checking your ECU for codes yourself (OBD I)

OK, this is an extremely easy procedure to do yourself without paying the money to have a shop do it for you.

I know in the civics, the ECU is down by the right foot of the passenger, other cars, I'm not sure, hopefully someone else can help out with that one , all you have to do is pop off the panel that covers the ecu, I believe there is a big black plastic screw at the top of it that helps hold the panel in place, your ecu should be looking right back at you

all you need is a paper clip

straighten out the paper clip, then bend it into a "U" shape. on top of your ecu, you'll see a little blue harness (when i say little, I mean about the side of a chicklets gum). There should be two little slots in that harness, all you have to do is insert one end of the paper clip in each slot, so for those of you that know a thing about electronics, it'll basically be like your running current from one to the other.

then leave that paper clip in there and put your car into the second position, watch your check engine light, it'll make fast and slow blinks, each slow blink=10, and each fast blink just equals that...

Example: 2 slow blinks, one fast blink= 21

then just go to the codes that I posted, and look it up..there ya go.

 

 
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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 center sensor
9 CYP - cylinder sensor
10 IAT - intake air temperature sensor
12 EGR - exhaust gas re circulation 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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