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One of the most frustrating situations is looking at your dash and seeing a bright yellow check engine light telling you that your 1999 Acura Integra has a problem. Diagnosing problems with automotive components in 1999 Acura Integra vehicles are becoming increasing more complicated due to advancing automotive technologies and electronics.

The Modified Life staff has taken all its 1999 Acura Integra how to and do it yourself (DIY) articles and cataloged them online for use by our Modified Life visitors for free. Our how to articles help you install new after market car parts, replace used car parts, diagnose automotive problems and repair car components in your 1999 Acura Integra.

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How to Diagnose a Check Engine Light on 1999 Acura Integra

1. Activate the 1999 Acura Integra Check Engine Light Diagnostic:

Go to passenger kick panel of your 1999 Acura Integra and look for a green cover right above the kick panel. Inside the green cover you’ll find a blue connector that has two wires attached to it. With the ignition off, use a small wire or paper clip to jump or connect the two wires in the blue connector. After securing the connection, turn your key to the ignition position (two clicks) until the dash lights come on but do not start your 1999 Acura Integra.

2. Read the Check Engine Code off the 1999 Acura Integra Check Engine Light:

To read the check engine code, pay close attention to how your check engine light is flashing. It will flash a series of long flashes and short flashes. The check engine trouble code is a 2-digit code. The long flashes represent the first digit and the short flashes represent the second digit. If your 1999 Acura Integra check engine light flashes 2 long flashes and 3 short flashes, then the check engine trouble code is: 23

If your 1999 Acura Integra has one check engine trouble code, the check engine light will flash long flashes, short flashes, pause and repeat the code.

LONG – LONG – SHORT – SHORT – SHORT – PAUSE – REPEAT
(Here the check engine trouble code is 23.)

If your 1999 Acura Integra has more than one check engine light trouble code, the first engine code will flash, then the second engine code will flash and repeat.

LONG – SHORT – SHORT – PAUSE – LONG – LONG – PAUSE – REPEAT
(Here the check engine trouble codes is 12 and 20.)

3. Look up your code on the list of 1999 Acura Integra check engine light codes below:

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 – Vehicle 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
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
67 Catalyst Low Efficiency (Same As P0420)
70 Automatic Transmission Malfunction W/AT Controls
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 Evaporative Emission Control System Insufficient Purge Flow

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