Periodically in any vehicle, one or another malfunction is detected. Equipping a car with an on-board computer system allows you to identify these problems at an early stage, which simplifies repair and does not lead to further destruction of other systems. Let us further consider what Toyota error codes are, their decoding, methods for diagnosing and troubleshooting.
Gasoline models
When conducting diagnostics, it is necessary to consider the type of engine and the gearbox aggregating with it . To begin, we will study the error codes of Toyota Corolla and other versions on a gasoline engine, as well as their interpretation:
- 98 - a malfunction of the vacuum control unit in the vacuum type brake booster was detected.
- 92 - malfunction of the cold start nozzle . Indicates the need to replace the item.
- 55, 53, 52 - malfunctions in the knock sensors, the defective element must be replaced.
- 49 - incorrect operation of the fuel control device. After replacing the indicator, re-check it.
- 43 - the on-board computer captures an incorrect pulse from the starter. A thorough check of the entire mechanism must be carried out.
- 42 - a warning is received about a malfunction of the vehicle speed sensor indicator.
- 41 - an alarm signal from the throttle position adjustment device.
- 36 - CPS sensor failure.
- 34 - it is necessary to check the turbine boost assembly.
- 31 - notification of a violation in the functioning of the absolute pressure control in the powertrain system.
- 25 - an oxygen indicator signals the presence of a lean mixture in the injection unit.
- 24 - inlet temperature sensor failed.
- 22 - indicator for monitoring the temperature of the coolant transmits an incorrect pulse to the on-board computer. Replace the device.
- 21 - the oxygen sensor has broken. To resume proper operation, the tool must be replaced.
- 19 - the position of the accelerator pedal is violated. The second value of this impulse is the failure of the pedal position sensor.
- 16 - violations in the operation of the transmission unit are detected. A thorough check of the checkpoint is necessary.
- 14, 15 - there were problems in one of the four ignition coils.
- 12, 13 - a signal is received about the malfunction of the indicator of the position control of the crankshaft.
Toyota error codes on diesel
The list of the designation of the problems of cars of the considered brand with diesel engines:
- 96 - warning about the malfunction of the valve position sensor EBR.
- 42 - the speed sensor is not working properly. The problem is solved by replacing the item.
- 39 - the fuel temperature indicator is not functioning properly.
- 35 - the charge pressure control sensor does not work correctly. After replacing the device, re-check.
- 32 - notification of the on-board computer about a malfunction in the work of corrector-resistors.
- 24 - faults in the temperature control sensor at the inlet.
- 22 - error code of Toyota Corolla and other “diesels”, indicating a breakdown of the antifreeze temperature controller in the cooling system.
- 19 - violation of the clutch pedal control sensor. The item requires replacement.
- 18 - notification of violations in the operation of the bypass solenoid valve. After replacing the parts, re-check.
- 17 - malfunctions are detected in the control unit. A thorough diagnosis of the device is required.
- 15 - the throttle servo is not functioning properly.
- 14 - notification of violations in the operation of the injection advance control unit.
- 13 - a signal is sent to the on-board computer about malfunctions of the shaft speed.
- 12 - indicates a malfunction of the crankshaft indicator.
Error codes "Toyota" with automatic transmission
Designation and interpretation:
- 73 - the on-board computer is notified about the malfunction of the clutch and the center differential solenoid.
- 64 - the control unit signals a malfunction of the hydraulic transformer blocking elements.
- 63, 62 - failure of the first or second solenoid.
- 61 - malfunction of the speed indicator. The problem is solved by replacing the fixture.
- 46 - violation in the operation of the pressure accumulator pressure controller.
- 44, 42 - a malfunction in the operation of the output shaft speed indicator. To set up the unit, replace the element.
- 38 - notification of a failure of the temperature indicator of the transmission filler. After replacing the sensor, a check is carried out.
- 37 - a signal is given about incorrect operation of the input shaft speed indicator.
- 11 - a signal about the normal operation of the automatic transmission.
Other most common malfunctions
The following are Toyota Camry error codes, which are most often found and are determined using special equipment:
- b0101 - there is a notification on the BC about the violation of the security system (airbags).
- p0051 - Oxygen sensor heating is not working properly.
- p0352 - malfunctions in the operation of the ignition system assembly were detected. A more thorough check of the circuit is required.
- s1241 - there is a warning about the closure of the trailer in the ABS system. The circuit must be checked for breakdowns and short circuits.
- p1349 - a signal indicates a malfunction of the VVTi valve. You must replace the item.
- Error code "Toyota" b1801– a pulse informs the on-board computer about a break in the squib from the driver's seat. To identify the cause, the circuit is checked for short circuits and breaks.
- p1656 - a signal indicates a VVT open or short circuit, and a malfunction in the electrovalve of this unit can also be detected.
- p1604 - reported a failure of the intake system. A thorough site check must be performed.
- p071 - the Toyota Avensis error code indicates a poor fuel mixture in the power unit.
- s1201 - there is a signal about a violation in the operation of the motor. Most often, the problem occurs when the speed is reduced to 500.
Self diagnosis
This process allows the vehicle owner to identify and repair the problem. To carry out this process, you need to have certain equipment and relevant skills. Error codes in the self-diagnosis of Toyota can be performed by a novice if he learns the advice of specialists and the features of the operation.
The car has a pair of connectors designed for self-diagnosis. Their indices are DLC-1 and DLC-2. Externally, these elements are rectangular boxes made of plastic, located mainly on the left side in the engine compartment. To determine their location during the first diagnosis, Diagnostic is displayed on the connector cover.
Features
Self-diagnosis of Toyota identifies error codes in a limited number, but this is enough to determine the main malfunctions. The second connector for performing the operation on almost all models is located under the torpedo near the driver's seat. It has a slightly different configuration, because with this element additional equipment is connected for verification. This connector is located in an inconvenient place, however, it makes it possible to check the vehicle while driving.
In older versions of Toyota, engine error codes are detected using the connector, which is located in the engine compartment. These elements have a round shape and are marked with a yellow tint, located next to the battery. These machines do not have connectors in the passenger compartment.
Combination No. 1 for verification
Of the two possible methods of self-diagnosis, the first is classified as type 09. This combination consists of a two-digit code with specific parameters:
- Impulse width - 0.1 s.
- The period between signals is 0.1 s.
- The delay between units and tens is 1.5 s.
- The pause between the fault output is 2.5 s.
- A similar indicator between a series of failure variations is 4.5 s.
The second way to diagnose
The next type of test combinations is type 10. This is a unique code where the pulses are identical to the variation of the fault. Characteristics:
- signal width - 0.5 s.
- The interval between pulses is 0.5 s.
- The gap in the display of combinations is 2.5 s.
- The delay between series of combinations is 4.5 s.
Diagnostic steps
Toyota Prado error codes can be identified using the following sequence:
- Open the hood of the car and find a plastic box labeled Diagnostic.
- Unscrew and remove the cover. On its back should be a pointer to the findings. With the help of a metal wire, the TE-1 and E-1 contacts are closed.
- Drive, turn on the ignition. Heater and air conditioning must be turned off. When you turn the key, the O / D and Check Engine indicators will flash. If the lamps blink for a long period and continuously for more than 11 times, it means that there were no malfunctions in the engine or automatic transmission. In this case, you can remove the jumper and operate the car further.
- Decryption of Toyota error codes is required if the Check Engine lamp starts to flash, giving indicators. It is advisable to write down all indices for further study.
- The flashing of the control indicator with an interval of 4.5 seconds is code 10.
- Multiple blinking also indicates that no damage was detected in the on-board computer.
Recommendations
If you are not sure that the contacts are closed in the correct order, activate the ignition, take a test lamp with wires. One of them is connected to the car body (to ground). The second wire is alternately to each connector. After entering the TE-1, the Check Engine indicator will begin to blink. It is advisable to perform such manipulation with an assistant, since you will need to look for connectors and observe the instrument panel.