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Old 11-29-2007, 04:43 PM   #1
1funryd
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All Honda ECU Codes

Added to the sticky's



Sean

1
Accord Civic CRV CRX Del Sol Odyssey Prelude
85-98 86-98 97-98 85-91 93-97 95-98 85-98 Oxygen Sensor "A" (Primary)
defective circuit or unplugged / defective sensor

2
Accord Civic CRV CRX Del Sol Odyssey Prelude
85-89 86-87 n/a 85-87 85-91 n/a n/a Oxygen Sensor "B"
defective circuit or unplugged / defective sensor

3
Accord Civic CRV CRX Del Sol Odyssey Prelude
85-98 86-98 97-98 85-91 93-97 95-98 85-98 MAP Sensor (Manifold Absolute Pressure)
defective circuit or unplugged / defective sensor

4
Accord Civic CRV CRX Del Sol Odyssey Prelude
90-98 88-98 97-98 88-91 93-97 95-98 85-98 CKP Sensor (Crankshaft Position Sensor)
defective circuit or unplugged / defective sensor

5
Accord Civic CRV CRX Del Sol Odyssey Prelude
85-98 * 86-98 97-98 85-91 93-97 96-98 85-98 MAP Sensor (Manifold Absolute Pressure)
mechanical problem / disconnected piping
* exc 94-95

6
Accord Civic CRV CRX Del Sol Odyssey Prelude
85-98 86-98 97-98 85-91 93-97 95-98 85-98 ECT Sensor (Engine Coolant Temperature)
defective circuit or unplugged / defective sensor

7
Accord Civic CRV CRX Del Sol Odyssey Prelude
85-98 86-98 97-98 85-91 93-97 95-98 85-98 TP Sensor (Throttle Position)
defective circuit or unplugged / defective sensor

8
Accord Civic CRV CRX Del Sol Odyssey Prelude
85-98 86-98 97-98 85-91 93-97 95-98 85-98 TDC Sensor (Top Dead Center)
defective circuit or unplugged / defective sensor

9*
Accord Civic CRV CRX Del Sol Odyssey Prelude
85-98** 86-98 97-98 85-91 93-97 95-98 85-98 CYP Sensor (Cylinder)
defective circuit or unplugged / defective sensor
* not a valid code for any throttle body injection Hondas
** not a valid code for V-6 engines

10
Accord Civic CRV CRX Del Sol Odyssey Prelude
85-98 86-98 97-98 85-91 93-97 95-98 85-98 IAT Sensor (Intake Air Temperature)
defective circuit or unplugged / defective sensor

12
Accord Civic CRV CRX Del Sol Odyssey Prelude
85-98 86-98 * n/a 85-91 * n/a 95-98 85-98 EGR Lift Sensor (Exhaust Gas Recirculation)
defective circuit or unplugged / defective sensor
* not a valid code if car is not equipped with an EGR valve (some Civic models are not)

13
Accord Civic CRV CRX Del Sol Odyssey Prelude
85-98 86-98 97-98 85-91 93-97 95-98 85-98 BARO Sensor (Atmospheric Pressure)
defective circuit or unplugged / defective sensor

14
Accord Civic CRV CRX Del Sol Odyssey Prelude
88-98 88-98 97-98 88-91 93-97 95-98 88-98 IAC Valve (Idle Air Control)
defective circuit or unplugged / defective sensor

15
Accord Civic CRV CRX Del Sol Odyssey Prelude
90-95 88-95 n/a 88-91 93-95 95 88-95 Ignition Output Signal
missing or defective ignition output signal

16
Accord Civic CRV CRX Del Sol Odyssey Prelude
90-95 88-95 n/a 88-91 93-95 95 88-95 Fuel Injector System
defective circuit or unplugged / defective fuel injector

17
Accord Civic CRV CRX Del Sol Odyssey Prelude
88-98 88-98 97-98 88-91 93-97 95-97 88-98 VSS (Vehicle Speed Sensor)
defective circuit or unplugged / defective sensor

19
Accord Civic CRV CRX Del Sol Odyssey Prelude
n/a 88-95 n/a 88-91 93-97 n/a n/a Automatic Transmission Lock Up Control Solenoid Valve
defective circuit or unplugged / defective solenoid valve

20
Accord Civic CRV CRX Del Sol Odyssey Prelude
90-98 88-98 97-98 88-91 93-97 95-98 92-98 Electrical Load Detector
defective circuit or unplugged / defective sensor

21*
Accord Civic CRV CRX Del Sol Odyssey Prelude
94-98 ** 92-95 n/a n/a 93-95 n/a 93-95 VTEC Solenoid Valve
defective circuit or unplugged / defective solenoid valve
* not a valid code if car does not have a VTEC engine
** not with V-6 engine

22*
Accord Civic CRV CRX Del Sol Odyssey Prelude
94-98 92-98 n/a n/a 93-97 98 93-98` VTEC Oil Pressure Switch
defective circuit or unplugged / defective oil pressure switch
* not a valid code if car does not have a VTEC engine

23
Accord Civic CRV CRX Del Sol Odyssey Prelude
98 * 96-98 n/a n/a 94-97 n/a 92-98 KS (Knock Sensor)
defective circuit or unplugged / defective sensor
* not a valid code if V-6 engine

30
Accord Civic CRV CRX Del Sol Odyssey Prelude
90-98 * n/a n/a n/a n/a 95 92-98 * Automatic Transmission Signal: "A" / SEAF / SEFA / TMA or TMB
defective circuit or unplugged / defective sensor
* not a valid code for 1996

31
Accord Civic CRV CRX Del Sol Odyssey Prelude
90-95 n/a n/a n/a n/a 95 92-95 Automatic Transmission Signal "B"
defective circuit or unplugged / defective sensor

41
Accord Civic CRV CRX Del Sol Odyssey Prelude
90-98 92-98 97-98 n/a 93-97 95-98 90-98 Primary Oxygen Sensor - Heater
circuit malfunction

43
Accord Civic CRV CRX Del Sol Odyssey Prelude
90-95 92-95 n/a n/a 93-95 95 90-95 Fuel Supply System
defective or malfunctioning fuel supply system

45
Accord Civic CRV CRX Del Sol Odyssey Prelude
96-98 96-98 97-98 n/a 96-97 96-98 96-98 System Too Lean or Too Rich
malfunction in the fuel monitoring systems

48
Accord Civic CRV CRX Del Sol Odyssey Prelude
98 92-98 n/a n/a n/a n/a n/a LAF Sensor (Lean Air Fuel)
defective circuit or unplugged / defective sensor

54
Accord Civic CRV CRX Del Sol Odyssey Prelude
96 96-98 97-98 n/a 96-97 n/a n/a CKF Sensor (Crankshaft Speed Fluctuation)
defective circuit or unplugged / defective sensor

58
Accord Civic CRV CRX Del Sol Odyssey Prelude
98 * n/a n/a n/a n/a n/a n/a TDC Sensor 2 (Top Dead Center)
defective circuit or unplugged / defective sensor
* with V-6 engine only

61
Accord Civic CRV CRX Del Sol Odyssey Prelude
96-98 96-98 97-98 n/a 96-97 96-98 96-98 Oxygen Sensor, Heated - Sensor 1 (Primary)
high voltage, low voltage, or slow response

63
Accord Civic CRV CRX Del Sol Odyssey Prelude
96-98 96-98 97-98 n/a 96-97 96-98 96-98 Oxygen Sensor, Heated - Sensor 2 (Secondary)
high voltage, low voltage, or slow response

65
Accord Civic CRV CRX Del Sol Odyssey Prelude
96-98 96-98 97-98 n/a 96-97 96-98 96-98 Oxygen Sensor Heater (Secondary)
malfunctioning or defective oxygen sensor heater

67
Accord Civic CRV CRX Del Sol Odyssey Prelude
96-98 96-98 97-98 n/a 96-97 96-98 96-98 Catalyst system Efficiency Below Threshold
malfunctioning or defective catalyst system

70
Accord Civic CRV CRX Del Sol Odyssey Prelude
96-98 96-98 97-98 n/a n/a 96-98 96-98 Automatic Transmission
malfunction with the automatic transmission controls

71
Accord Civic CRV CRX Del Sol Odyssey Prelude
96-98 96-98 97-98 n/a 96-97 96-98 96-98 Cylinder 1 Misfire or a Random Misfire
a condition is present that is creating a cylinder misfire

72
Accord Civic CRV CRX Del Sol Odyssey Prelude
96-98 96-98 97-98 n/a 96-97 96-98 96-98 Cylinder 2 Misfire or a Random Misfire
a condition is present that is creating a cylinder misfire

73
Accord Civic CRV CRX Del Sol Odyssey Prelude
96-98 96-98 97-98 n/a 96-97 96-98 96-98 Cylinder 3 Misfire or a Random Misfire
a condition is present that is creating a cylinder misfire

74
Accord Civic CRV CRX Del Sol Odyssey Prelude
96-98 96-98 97-98 n/a 96-97 96-98 96-98 Cylinder 4 Misfire or a Random Misfire
a condition is present that is creating a cylinder misfire

75
Accord Civic CRV CRX Del Sol Odyssey Prelude
98 * n/a n/a n/a n/a n/a n/a Cylinder 5 Misfire or a Random Misfire
a condition is present that is creating a cylinder misfire
* valid code for V-6 engine only

76
Accord Civic CRV CRX Del Sol Odyssey Prelude
98 * n/a n/a n/a n/a n/a n/a Cylinder 6 Misfire or a Random Misfire
a condition is present that is creating a cylinder misfire
* valid code for V-6 engine only

80
Accord Civic CRV CRX Del Sol Odyssey Prelude
96-98 96-98 n/a n/a n/a 96-98 96-98 Exhaust Gas Recirculation
insufficient flow detected

86
Accord Civic CRV CRX Del Sol Odyssey Prelude
96-98 96-98 97-98 n/a 96-97 96-98 96-98 ECT Sensor (Engine Coolant Temperature)
circuit range / performance problem

90
Accord Civic CRV CRX Del Sol Odyssey Prelude
97-98 96-98 n/a n/a n/a 98 97-98 Evaporative Emission Control System
leak detected in the fuel tank area

91
Accord Civic CRV CRX Del Sol Odyssey Prelude
96-98 96-98 n/a n/a n/a 98 97-98 Fuel Tank Pressure Sensor
low input

92
Accord Civic CRV CRX Del Sol Odyssey Prelude
96-98 96-98 97-98 n/a 96-97 96-97 96-98 Evaporative Emission Control System


These are 3rd Gen specific:

3rd generation ECU error codes and ECU location. To access the codes (if any) turn the ignition key to the on position but do not start the car. Locate the indicator LED and count the number of flashes. Single digit codes are indicated by a series of short flashes. Two digit codes use a long flash for the first digit followed by the appropriate number of short flashes. After a short pause the code will repeat. For multiple codes the codes will flash alternately with a pause between codes.
ie. For code 3 and 14....
The LED will flash 3 times, pause, flash once long then 4 times, pause and repeat from the beginning.
On '85-'87 Preludes the ECU is located in the left side trim panel beside the rear seat. On '88-'91 Preludes the ECU is located under the carpet on the right passenger floorboard.
Dont forget, if your throwing a code use the ONLINE MANUAL to isolate and fix the problem.



'85-'89 PGM-FI

Code 0 ECU
Code 1 Oxygen content A
Code 2 Oxygen content B
Code 3 MAP sensor
Code 4 Crank angle sensor
Code 5 MAP sensor
Code 6 Coolant temperature
Code 7 TPS sensor
Code 8 TDC position sensor
Code 9 No.1 cylinder position sensor
Code 10 Intake air temperature sensor
Code 11
Code 12 Exhaust gas recirculation system
Code 13 Atmospheric pressure sensor
Code 14 Electronic idle control
Code 15 Ignition output signal
Code 16 Fuel injector
Code 17 Vehicle speed sensor


'90-'91 PGM-FI

Code 0 ECU
Code 1 Oxygen content A *, Oxygen content **
Code 2 Oxygen Content B
Code 3 MAP sensor
Code 4 Crank angle sensor
Code 5 MAP sensor
Code 6 Coolant temperature
Code 7 Throttle position sensor
Code 8 TDC position sensor
Code 9 No.1 cylinder position sensor
Code 10 Intake air temperature sensor
Code 11
Code 12 Exhaust gas recirculation system
Code 13 Atmospheric pressure sensor
Code 14 Electronic air control
Code 15 Ignition output signal
Code 16 Fuel injector
Code 17 Vehicle speed sensor
Code 41 ** Oxygen sensor heater
Code 43 ** Fuel supply system
* 2.0 liter engines
** 2.1 liter engines
Clearing ECU codes
Stored codes are earased from memory by disconnecting power to the ECU for at least 30 seconds. Disconnecting the negative battery cable will clear the memory of the ECU, as well as other solid-state equipment such as radios. The ECU may also be cleared by pulling the appropriate fuse from the underhood fuse and relay box. This may be the BACK-UP, CLOCK or CLOCK/RADIO fuse.






Sean
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Last edited by 1funryd; 11-29-2007 at 04:50 PM.
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Old 11-29-2007, 06:23 PM   #2
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Old 11-29-2007, 06:33 PM   #3
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nothing that wasnt on prelude3g.com
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Old 11-29-2007, 07:03 PM   #4
1funryd
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Quote:
Originally Posted by tricken View Post
nothing that wasnt on prelude3g.com

Very true, but since we look to this forum to provide us with answers, I felt it was pertinent and that it should be easily accessible to all.

So I made a new thread, that should pull up on the search and put it into the 3rd gen performance link, so that it was easier to access for all, new and old.

I too don't like having to dig throug mountains of usless threads to get a straight answer.

Sean
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Old 11-29-2007, 08:06 PM   #5
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this was already in the stickies.

i know it was, cuz i put it there. even got it from the same source you did;
http://www.hondacivicforum.com/m_45386/tm.htm

it's under common fixes, ecu error codes aka trouble codes
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Old 11-30-2007, 10:52 AM   #6
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It's incorrect anyway, it's not 88-89 and 90-91, it's b20a5 and b21a1.
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