Engines Diagnostic Connectors. Scan Tool for Codes and Live Data for your Toyota Engine from $149.95. Toyota Engines - Please select the connector for your vehicle from the options below. Photos of where to find connector in car. Diagnostic Link Connector No. Year range: 1996 to 2009. Locations: Under the drivers side dash panel.

Step 1 - To gather trouble codes locate the diagnostic connector under the hood near passengers fender, or under the dash on the driver’s side.

Step 2 - Use a jumper wire connect the TE1 and T1 terminals (For Tercel and MR2 use the T and E1 terminals).

• Toyota OBD I Diagnostic Trouble Codes. This covers Toyota Motor Corporation OBD I diagnostic and explains how to get the codes without any special tools. The codes are listed seperately for Camry and Corolla models as needed. The codes are defined as to what system is affected. When possible we give the more commonly known OBD II component name.
• Aug 08, 2021 Description, Diagnostic and Repair Information for Toyota OBD2-OBDII Engine Codes Page 1 AutoCodes.com.

Step 3 - Turn the ignition key to the 'ON' position and observe the check engine light, count the number of times it blinks which will be the first digit of the two digit trouble code, the check engine light will pause shortly followed by the second digit of the trouble code. For example; if the check engine light blinks once and pauses followed by six blinks the trouble code number would be 16.

If no code is present the check engine light will stay on constantly, to restart code gathering turn the ignition key to the 'OFF' position, wait three minutes and turn the ignition key back 'ON' again. Remove the jumper wire once code gathering is complete. To clear code after the repairs have been made remove the negative battery cable for one minute and reconnect.

Code Definition Table

Code 11 Momentary interruption in power supply to ECU (electronic control unit or computer) up to 1991

Code 12 Engine revolution signal missing

Toyota Obd Codes P1135

Code 13 Rpm signal to ecu missing above 1000 rpm

Code 14 Igniter signal to ecu missing

Code 16 A/T control signal missing from ecu

Code 21 Main oxygen sensor signal fault

Code 22 Water temperature sensor circuit fault

Code 23 and 24 Intake air temperature signal fault

Code 25 Air/fuel ratio LEAN

Code 26 Air/fuel ratio RICH

Toyota Obd Code 33

Code 27 Sub-oxygen sensor signal or heater circuit fault

Code 28 No. 2 oxygen sensor/heater signal fault

Code 31 and 32 Air flow meter circuit or Vacuum sensor signal fault

Code 34 and 36 Turbo-charging pressure signal fault

Code 35 Altitude compensation sensor signal fault

Code 41 Throttle position circuit fault

Code 42 Vehicle speed sensor circuit

Code 43 No starter signal to the ecu

Code 51 AC signal on; DL contact off (in transmission shifter with diagnostic connector jumped)

Code 52, 53 and 55 Knock sensor fault Code 71 EGR system malfunction

Code 72 Fuel cut solenoid signal fault

Code 78 Fuel pump control signal fault

Code 81, 83, 84 and 85 TCM communication fault

OBD1 for Toyota cars have first generation 'Onboard Diagnostics' systems.the OBD system allows mechanics to diagnose problems in the car.

The first step is to find your vehicles diagnostic plug.

The second step in troubleshooting the problem is retrieving the engine fault code. In this guide, we will take a look at how you can read and clear engine fault codes using various scanners.

The connector is usually located under your steering wheel, under the dash. The connector may have a black plastic cover over it and you may have to remove some covers to reach it. The connector is often black and has 12 pins on it, pretty easy to identify.

OBD-II Trouble Codes: Full List! | Toyota Nation Forum

Full list of Toyota OBD I Diagnostic Trouble Codes for your Vehicle

If your Check engine light is on you may have a serious problem. Scan your codes and follow the chart to determine what the code means.

Toyota OBD Check Process :

To get the codes yourself, turn the engine off and connect a jumper wire (Or a paper clip works too) between terminals TE1 and E1 of the diagnostic terminal connector located in the engine compartment or under the left side of the dash.

With full manuals for over 30,000 vehicles online, you will find obd1 code meaning with an exact match for your Toyota vehicle's year, make and model.