Table of Contents

NOTE: 96 & later are OBD2 systems and require a scanner. For an OBD2 code list, please see our Daihatsu code list or the appropriate generic list.

Daihatsu: Accessing Diagnostic Trouble Codes

The ECU self diagnosis circuit detects and stores system malfunctions related to the various sensor and actuator circuits. These malfunctions are stored as DTCs in the ECU as long as battery voltage is applied to the ECU and the Check Engine lamp will remain On as long as the malfunction is present. By analyzing these DTCs, system malfunctions can be easily diagnosed and repaired.

To obtain DTCs stored in the ECU memory, close throttle valve fully and turn all accessory switches off, then proceed as follows:

  1. Short terminals of check connector with check connector test harness tool No. 09991-87702-000, or equivalent.
  2. Check connector test harness
  3. Turn ignition On. Do not start engine.
  4. DTCs stored in ECU will cause Check Engine warning lamp to flash.

Daihatsu: Reading Diagnostic Trouble Codes

  1. Normal System operation is indicated by Check Engine lamp blinking once every 4.5 seconds.
  2. If ECU has detected a system malfunction, Check Engine lamp will blink a number of times to equal to DTC with an interval of 2.5 seconds between DTCs.
  3. After all stored DTCs have been read, there will be a 4.5 second pause and all DTCs will repeat.

Daihatsu: Clearing Diagnostic Trouble Codes

After service, the DTC retained in the ECU memory must be cleared by disconnecting the battery ground cable or removing the back-up fuse of the relay block assembly in the engine compartment for at least 10 seconds with the ignition turned Off.

Daihatsu: Diagnostic Trouble Codes

Please see our Daihatsu OBD2 code list for Daihatsu specific OBD2 fault codes.

Flash CodeFault LocationProbable Cause
2Pressure Sensor 
3Ignition Signal 
4ECT Sensor 
5O2S Signal Or Fuel System 
6Revolution Sensor 
7TP Sensor Signal 
8IAT Sensor Signal 
9VSS Signal 
10Starter Signal 
11Switch Signal 
12EGR Control System 
13Rev signal – Crank position sensor faultWiring, CMP sensor, ECM
14Camshaft position sensor Fault 
15Air To Fuel Ratio (Rich) 
16Air To Fuel Ratio (Lean) 
16Ignition signal – Igniter unit or wiring 
17Random/multiple Misfire Detected 
18Knock sensor (KS) – circuit malfunctionWiring, KS, ECM
21Primary Oxygen sensor signal – open or shorted (lambda sensor in exhaust)Wiring, HO2S/O2S, ECM
22Secondary Oxygen sensor – open or shorted 
23Primary Oxygen sensor heater fault 
24Secondary Oxygen sensor heater fault 
24Mixture adjustment resistor – circuit malfunctionWiring, mixture adjustment resistor, ECM
25Running too lean 
26Running too rich 
27Catalytic convertor efficiency below threshold 
31Manifold absolute pressure (MAP) sensor – circuit malfunctionWiring, MAP sensor, ECM
32Atmospheric pressure sensor (BARO) malfunction 
36Random/multiple Misfire Detected 
41Throttle position (TP) sensor – circuit malfunctionWiring, TP sensor, ECM
42Engine coolant temperature (ECT) sensor – open/short circuitWiring, ECT sensor, ECM
43Intake air temperature (IAT) sensor – open/short circuitWiring, IAT sensor, ECM
44AC evaporator temperature sensor – circuit malfunctionWiring, AC evaporator temperature sensor, ECM
45AC compressor clutch – circuit malfunctionWiring, AC compressor clutch, AC compressor RPM sensor
51Switch signal – malfunctionWiring, AC switch, PNP switch, TP sensor, ECM
52Vehicle speed sensor (VSS) – circuit malfunctionWiring, speedometer, VSS, ECM
54Starter Signal – open or shorted or due to bump start 
61Engine Control Module – Power Supply 
71Idle Speed Control System – Fault 
73Camshaft Position Actuator – Circuit Fault 
74Oil control Valve – Circuit Fault 
75Camshaft Position Actuator – Circuit Fault 
76Evaporative Emission canister purge valve – Circuit Fault 
81Immobilizer control module – signal malfunctionWiring, immobilizer control module, ECM
83Immobilizer control module/engine control module (ECM) – communication malfunction 
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11 months ago


Which to terminals do I short? It is not super clear in the drawing. I believe it’s 1 and 2 but others have stated 1 and 3.

1 year ago

Please what does code 19 means?

maxi kielenkele
maxi kielenkele
4 years ago

please, what does code 51 means?

1 year ago
Reply to  BAT Team

Perdón….a que “interruptor” hace referencia?

5 years ago

Code 76 mean?

5 years ago

Anyone have the issue of the diagnostic connector not working at all? People said to check the fuse for the cigarette lighter, however there is no fuse for it on the panel and every fuse is in good shape. Any thoughts?

JAMES mboyo
JAMES mboyo
5 years ago


Iqbal hossain
Iqbal hossain
5 years ago

I need trouble code list