Reading Diagnostics Codes For Toyota OBD

Reading Diagnostics Codes For Toyota OBD

Basic codes by flashing “Check Engine-light” (“MIL”)
1 Normal Condition
2 Air Flow Meter signal
MANIFOLD AND/OR AIRFLOW METER SENSOR circuit
– AIRFLOW METER/circuit
– MANIFOLD PRESSURE SENSOR/circuit
3 Ignition signal
-NO “IGF” SIGNAL to ECM
-IGNITER/IGNITER CIRCUIT
-IGNITER AND IGNITION COIL/circuit
4 Engine Coolant Temperature Sensor signal
– OPEN or SHORT IN WATER TEMP. SENSOR
– WATER TEMPERATURE SENSOR circuit
– WATER TEMPERATURE SENSOR
5 Oxygen Sensor OXYGEN SENSOR SIGNAL/OXYGEN SENSOR HEATER Signal
OPEN OR SHORT IN OXYGEN SENSOR OR OXYGEN SENSOR Signal
6 RPM signal (Crank Angle Pulse) RPM Signal
– NO SIGNAL to ECU FROM DISTRIBUTOR (“Ne” or “G”) AFTER ENGINE HAS BEEN CRANKED
– DISTRIBUTOR/circuit
– STARTERSIGNAL circuit
– IGNITER/IGNITER circuit
7 Throttle Position Sensor Signal
– OPEN or SHORT Signal
– TPS SENSOR
– TPS Signal/circuit
8 Intake Air Temperature Sensor Signal
– Open or short INTAKE AIR TEMP. SIGNAL
– INTAKE AIR TEMPERATURE circuit
– INTAKE AIR TEMPERATURE SENSOR
9 Vehicle Speed Sensor Signal
-NO SPD. SIGNAL FOR SEVERLA SECONDS WHILE VEHICLE IS OPERATED UNDER HEAVY LOAD
TPS/MAP/AIR FLOW INPUTS)
– SPEED SENSOR/circuit
10 Starter signal
11 Switch signal LOSS OF POWER SUPPLY TO ECM
-IGNITION SWITCH/circuit
-MAIN RELAY/circuit
12 Knock Control Sensor signal
STARTER SIGNAL
– NO “STA” SIGNAL TO ECM UNTIL ENGINE SPEED EXCEEDS 800 RPM
– IGNITION SWITCH/circuit
12 RPM signal (G22 for –FSE)
– NO SIGNAL TO ECM FROM DISTRIBUTOR (“Ne” OR “G”) AFTER ENGINE HAS BEEN CRANKED
– DISTRIBUTOR/circuit
– STARTERSIGNAL circuit
-IGNITER/IGNITER circuit
12 Crankshaft position (CKP) sensor – circuit malfunction (3C-TE)
13 Knock Control CPU (ECM)
13 RPM signal (NE for –FSE)
SAME AS above but after ENGINE has RUN AT 1,000 – 1,500 RPM
-DISTRIBUTOR/DISTRIBUTOR circuit
13 Fuel injection pump position sensor – circuit malfunction (3C-TE)
14 Turbocharger Pressure
14 Ignition signal
– No “IG” or “IGF” ignition signal to ECM from ignitior several times in succession (IGT1, IGT4, IGF for –
FSE)
– NO “IGF” SIGNAL TO ECM
– IGNITER/IGNITER circuit
– IGNITER AND IGNITION COIL/circuit
14 (2C-TE) Timing control system malfunction
15 Ignition System (IGT2, IGT3, IGF for –FSE)
15 (1CD-FTV) Throttle motor – circuit malfunction
15 Throttle control circuit – malfunction
16 Faulity in transmission/transaxle ECM (Transmission control signal)
17 Engine control module (ECM) -malfunction
18 Fuel quantity adjuster -malfunction
MIL-code on Toyota / Lexus by al tech page (www.alflash.narod.ru/)
Note: Not all trouble codes are used on all models
2
19 Acceleration Pedal Position (AAP) Sensor/Switch circuit malfunction (VC, VPA, VPA2, E2 – for
FSE, 3C-TE)
21 Oxygen Sensor
OXYGEN SENSOR SIGNAL/OXYGEN SENSOR HEATER SIGNAL
– OPEN or SHORT IN OXYGEN SENSOR OR OXYGEN SENSOR SIGNAL и еще десяток причин…
22 Engine Coolant Temperature Sensor signal
– OPEN OR SHORT IN WATER TEMP. SENSOR SIGNAL
– WATER TEMPERATURE SENSOR circuit
– WATER TEMPERATURE SENSOR
23 Intake Air Temperature Sensor signal
– OPEN OR SHORT IN INTAKE AIR TEMP. SIGNAL
– INTAKE AIR TEMPERATURE circuit
– INTAKE AIR TEMPERATURE SENSOR
24 Intake Air Temperature Sensor signal
– OPEN OR SHORT IN INTAKE AIR TEMP. SIGNAL
– INTAKE AIR TEMPERATURE circuit
– INTAKE AIR TEMPERATURE SENSOR
25 Air-Fuel Ratio Lean
– LEAN SIGNAL SENT TO ECU FROM O2 SENSOR
– INJECTOR FAULT(S)
– FUEL PRESSURE
– OXYGEN SENSOR
– AIRFLOW METER OR MAP SENSOR
– IGNITION
26 Air-Fuel Ratio Rich
– SAME AS ABOVE
– COLD START INJECTOR
27 Sub Oxygen Sensor signal
– SUB OXYGEN SENSOR/HEATER circuit
28 No. 2 Oxygen Sensor signal
No.2 OXYGEN SENSOR/OXYGEN SENSOR HEATER
– SAME AS CODE 21
29 No. 2 Oxygen Sensor signal
31 Air Flow Meter signal or Vacuum Sensor signal circuit
– AIRFLOW METER/CIRCUIT
– MANIFOLD PRESSURE SENSOR (MAP) circuit
32 Air Flow Meter signal (VANE-TYPE)
– AIRFLOW METER/circuit
32 (Diesel) Malfunction Resistance Signal
32 (2C-TE) Module coding plug – malfunction
32 (1CD-FTV) Injector – malfunction
33 IAC Valve
– OPEN OR SHORT IN IDLE AIR CONTROL VALVE Signal CIRCUIT or IDLE AIR CONTROL VALVE or ECM
33 Intake manifold air control solenoid –malfunction (3C-TE)
34 Turbocharger Pressure signal
– ABNORMAL TURBOCHARGER PRESSURE
– TURBO CHARGER
– AIRFLOW METER/MANIFOLD/TURBOCHARGER PRESSURE Signal
– INTERCOOLER SYSTEM
35 Turbocharger Pressure Sensor
– TURBOCHARGER PRESSURE SENSOR (Gas.)
35 Manifold Absolute Pressure Sensor (Diesel, 3C-TE)
35 HAC Sensor signal
-OPEN CIRCUIT IN HIGH ALTITUDE COMPENSATOR Signal
36 *
36 Sensor Combustion Pressure (Toyota Part No. 89468-20020)…
39 (Avensis) Fuel temperature sensor – circuit
39 VVT-i Valve (p1656,p1345,p1349, OCV for -FSE)
39 Fuel temperature sensor – circuit malfunction (3C-TE)
41 Throttle Position Sensor signal
– OPEN OR SHORT IN TPS Signal
– TPS Sensor
– TPS Signal/circuit
42 Vehicle Speed Sensor signal
– NO SPD. Signal for SEVERLA SECONDS WHILE VEHICLE IS OPERATED UNDER HEAVY LOAD
(TPS/MAP/AIR FLOW INPUTS)
– SPEED Signal circuit
MIL-code on Toyota / Lexus by al tech page (www.alflash.narod.ru/)
Note: Not all trouble codes are used on all models
3
43 Starter signal
– NO “STA” Signal TO ECU until ENGINE SPEED exceeds 800 RPM
– IGNITION SWITCH/circuit
45 EGR System malfunction
– VSV EGR
– Temperature Sensor
47 Sub-Throttle Position Sensor
– Open or short circuit in Sub-Throttle position sensor signal
47 Throttle position (TP) sensor
48 Vacuum Switching Circuit of Air Sw. Valve or Air Pump (EAP) Malfunction
49 for D-4 System SFP (PR, VC, E2 for -FSE)
51 Switch signal
SWITCH Signal IDL (tps) CONTACTS OFF, NEUTRAL START SWITCH OFF, A/C SWITCH “ON” Signal TO ECM
WITH DIAGNOSTIC CHECK CONNECTOR SHORTED
– A/C SWITCH/circuit
– A/C AMPLIFIER
– TPS/CIRCUIT
– NEUTRAL START SWITCH/circuit
52 Knock Sensor signal
– OPEN OR SHORT IN KNOCK SENSOR Signal
– KNOCK SENSOR/circuit
53 Knock Control signal in ECM FAULTY or Engine control module (ECM) knock control – defective
(P1605)
54 Inter-cooler ECM signal
Intercooler coolant circulation capacity diminished (fail-safe operation: ignition timing program retarded by
2 degr.)
55 Knock Sensor signal
Open or short circuit in knock sensor signal (Chaser TRD with 2JZ-GTE)
56 Cooling Fan Pressure Sw.
58 SCVP, E2, SCV+, SCV (for –FSE)
59 VVT-i Valve – for FSE)
71 EGR System
EGR VALVE MALFUNCTION
– EXHAUST GAS TEMPEATURE BELOW SPEC. FOR EGR CONTROL
– EGR SYSTEM
– EGR GAS TEMPERATURE SENSOR circuit
72 Fuel Cut Solenoid signal
IGF SIGNAL IS DETECTED FOR 4 CONSECUTIVE IGNITIONS
72 A/C System (A/C Relay Open)
78 (Avensis) Fuel circuit – malfunction
78, 79 Fuel Pump Control signal (S+, E1 for FSE) (P1235
– Fuel Pump Control signal, P1200- Fuel Pump Relay/ECU Malfunction ?)
– Open or Short circuit in fuel Pump Control circuit or Fuel Pump Electronic Control Unit (ECU)
79 D-4
81 TCM Communication
– Open in ECT1 circuit between ECM & Transmission Control Module (TCM) for at Least 2 seconds
83 TCM Communication
– Open in ESA1 circuit between ECM & Transmission Control Module (TCM) for 1/2 second after engine
idles at least 1/2 second
84 TCM Communication
– Open in ESA2 circuit between ECM & Transmission Control Module (TCM) for 1/2 second after engine
idles at least 1/2 second
85 TCM Communication
– Open in ESA3 circuit between ECM & Transmission Control Module (TCM) for 1/2 second after engine
idles at least 1/2 second
89 (P1125, 1126, 1127, 1128) read a pulse ETCS-SNOW (Chaser TRD with 2JZ-GTE)
92 D-4 (p1210)
96 (p1600) Engine control module (ECM) -supply
97 D-4 (p1215) EDU Malfunction
97 (Avensis) Injector control module – circuit malfunction
98 D-4
99 (B2799) there is a trouble with immobilizer (for the OBDII-equiped Vechicle)

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