How do I read my Toyota diagnostic code?

How do I read my Toyota diagnostic code?

How do I check error codes?

How do I clear Toyota error codes?

What are engine fault codes?

How do you clear the code on a Toyota forklift?

Can you read codes without check engine light on?

What are P codes?

What does I'm mean on a code reader?

How do you manually check engine codes?

How can I check my engine code without a code reader Toyota?

How do you clear engine codes without a scanner?

Toyota error codes are encrypted information about malfunctions in the engine and its systems or automatic transmission. Modern models Electronic control modules with self-diagnosis systems. They are designed to optimize equipment performance by reducing fuel consumption and minimizing exhaust emissions.

In order for the Toyota electronic control module to be able to receive the necessary data from the systems it controls, they are all equipped with sensors. If deviations from the norm set by the manufacturer in the readings of the sensors are detected, an emergency mode is started, accompanied by a corresponding indication on the dashboard. If the normal operating parameters of the sensor are restored (after repair, replacement or independently), the standard operating mode and the engine or automatic transmission are returned. At the same time, the data that malfunctions were detected are recorded in the database in the form of Toyota codes and remain there.

Toyota malfunctions can manifest themselves in different ways: it so happens that the engine stalls, attracting the attention of the driver who asks for auto repair help, and it also happens that the engine at first glance works well and its malfunctions are not visible, although the corresponding indication. The latter is often the cause of serious breakdowns, the elimination of the consequences of which requires significant investment. In this regard, Toyota's OBD2 error code system is very convenient. It records even random failures in the operation of the units and provides information about them during diagnostics. Thanks to this, the owner has the opportunity to take measures to exclude serious malfunctions or breakdowns of the car on the road.

P0010

Error p0010 Toyota is associated with incorrect mechanical timing between the crankshaft and the camshaft. In other words, the p0010 error is associated with the VVTI variable valve timing system. When an error p0010 appears in the memory of the engine control unit, the engine does not run stably, especially during acceleration and high revs. Fuel consumption increases. On the instrument panel, the inscription Check Engine lights up.

The dynamics of acceleration decreases and there is a drop in power at high speeds. There are many reasons for the appearance of error p0010 Toyota - an open circuit (wiring), detection of the integrity of electrical connectors and a mechanical failure. In our experience, mechanical failure is extremely rare. The fault p0010 on Toyota is caused by oil deposits inside the engine block, which clog the VVTI solenoid mesh.

P0300

The appearance of the P0300 code in the computer diagnostics report is a reason to be wary. It indicates that misfiring occurs regularly in one or more of the engine's cylinders. As a result, the toxicity of the exhaust increases and the vehicle's handling deteriorates, which increases the risk of accidents on the road. The factors that lead to misfire in the cylinders are as follows:

• Dirty nozzle of the fuel supply system;
• The need to replace spark plugs;
• Malfunction of a number of sensors;
• Bursts of electrical wiring, oxidized contacts;
• Air ingress into the system;
• Deficiency of gasoline pressure in the system;
• Clogged exhaust gas recirculation valve pipes;
• Use of fuel of inadequate quality.

P0301 -- P0304

The appearance of the P0301 code in the computer diagnostics report indicates that during the self-diagnosis process, the electronic control unit detected a misfire in the cylinder. They are able to provoke large volumes of hydrocarbons into the exhaust pipe, which can increase the concentration of toxins in the exhaust. The factors initiating this phenomenon are as follows:

• Short circuit in the wiring harness supplying the system;
• Malfunctioning spark plugs;
• Malfunctions of the fuel injector;
• Low fuel pressure in the system;
• Breakage of the antifreeze temperature sensor;
• Failure of the mass air flow sensor;
• Violation of valve timing.

P0335

The appearance of the P0335 code in the computer diagnostics report indicates that there are malfunctions in the vehicle's crankshaft position sensor. In the event that the transmission control unit does not receive at all or receives incorrect data from the crankshaft sensor, it fixes an error. As a result, the “Check Engine” indication appears on the dashboard and the engine is put into emergency operation. The reasons are as follows:

• breaks or short circuits in the circuit supplying the sensor;
• lack of contacts;
• breakdown of the sensor itself;
• damage to the signal plate;
• a worn out belt or timing chain.

P0340

Causes: Short circuit, corrosion or damage to the camshaft position sensor wires. Short circuit, corrosion, or damage to the CMP sensor connector. Malfunction of the camshaft position sensor. Malfunction of the crankshaft position sensor. The engine may not start, there will be an uneven idle, misfiring, a drop in engine power.

P0341

When a P0341 code appears on a PCD report, there is a malfunction in the camshaft position sensor. It is fixed by the electronic engine control module during self-diagnosis in case the number of pulses coming from the sensor is lower than the number set by the manufacturer. As a result, the “Check Engine” indication appears on the instrument panel, the engine power decreases, and it may stall. The reasons lie in wiring gusts and poor contacts.

P0100

Error P0100 Toyota is associated with the correct readings of the mass air flow sensor, which is also called MAF. The MAF sensor corrects the air / fuel mixture reading. In case of contamination of the sensor itself, its failure and damage to the electrical wiring, the engine goes into emergency operation. The dynamics of the car is reduced, the response to the gas pedal is belated. Unstable engine idling is observed. Fuel consumption increases up to 20%

P0101

Error p0101 on Toyota vehicles is associated with an incorrect signal coming from the MAF sensor to the engine control unit. The cause of the error can be mechanical destruction of the vacuum hoses, which lead to the "suction" of air. In other words, the tightness of the air duct of the air filter housing is broken. Also, the cause of the error may be insufficient contact of the MAF sensor electrical circuit connector. The Check Engine symbol lights up on the instrument panel. Fuel consumption may increase slightly and engine idling stability may be reduced.

P0102

A low signal level from the mass air flow sensor is the cause of the error p0102 in the memory of the engine control unit on Toyota vehicles. The cause of the error may be a broken contact of the MAF sensor electrical connector or an open circuit. The Check Engine symbol lights up on the instrument panel. It is extremely rare that the cause of such an error may be a malfunction of the mass air flow sensor itself.

P0103

The appearance of the code P0103 in the Toyota computer diagnostics report is associated with a high voltage level entering the MAF sensor. It is fixed by the electronic engine control unit in the process of self-diagnosis, including the "Check Engine" indicator, but without putting the car into emergency mode. The driver may notice an insignificant loss of ICE power and increased idle speed. The reasons may lie in the following:

• malfunction of connectors;
• open or short circuit;
• depressurization of the intake system;
• damage to the air filter.

P0105

The malfunction is related to the power supply to the engine and affects the formation of the fuel-air mixture in the engine. A common cause of the P0105 code on Toyota vehicles can be damaged intake manifold vacuum hoses, damaged electrical connectors or wiring, or poor electrical connections. The throttle valve and the manifold pressure sensor are out of sync. The engine runs unstable when idling.

P0106

Code P0106 is recorded in the Toyota computer diagnostics report when a malfunction is detected in the intake system and the engine is not performing well. The error is recorded by the electronic engine control unit during self-diagnosis if the output parameters of the pressure sensor do not correspond to those set by the manufacturer. Possible reasons are as follows:

• damage to the vacuum hose on the sensor;
• short circuit or open circuit supplying the sensor;
• oxidation of the sensor connector contacts;
• the location of the wires is too close to high voltage elements;
• breakdowns in the fuel supply system;
• failure of the elements of the piston group.

P0110

The cause of the P0110 error on Toyota may be a violation of the electrical integrity or the failure of the sensor itself. It is necessary to check the integrity of the wiring, connectors and clean the sensor or replace it in case of a malfunction. In the warm season, the malfunction practically does not make itself felt. When the temperature drops and in severe frosts due to a malfunction, the engine warm-up time increases, and the engine may also not start.

P0112

The code P0112 in the Toyota computer diagnostics report indicates that there are malfunctions in the circuit supplying the air temperature sensor. It is fixed by the electronic engine control unit in the process of self-diagnosis, detecting a discrepancy between the parameters of the available output voltage and the output voltage set by the manufacturer. If within half a second it does not reach 0.18, there is an error. Its reasons may lie in a short circuit and gusts in the electrical circuit supplying the sensor. The ECU switches the engine to emergency operation, black smoke appears from the exhaust pipe, fuel consumption increases.

P0113

The code P0113, recorded in the Toyota computer diagnostics report, indicates a malfunction in the circuit supplying the intake air temperature sensor. It is registered by the electronic engine control unit in the process of self-diagnosis, revealing the discrepancy between the parameters of the existing temperature and the temperature set by the manufacturer. If within half a second it exceeds 140 ° С, an error. Its reasons may lie in the presence of a short circuit and gusts in the electrical circuit supplying the sensor. As a result, the electronic control module puts the engine into emergency operation mode, urgent diagnostics is required.

P0115

The coolant temperature sensor has a built-in thermistor whose resistance changes in accordance with the change in the coolant temperature. The reason for the appearance of error p0115 on Toyota may be a malfunction of the sensor itself, which is extremely rare. Often the cause of this error is the corrosion of the electrical connector or the ingress of dirt, as well as the destruction of the electrical wiring.

P0116

Toyota P0116 code decoding The coolant temperature is −40 to 60 ° C (−40 to 140 ° F) at engine start and conditions (a) and (b) are met (2 trip detection logic):

Driving a vehicle at variable speed (acceleration and deceleration)

Coolant temperature does not change more than 3 ° C (5.4 ° F) from reference temperature

Malfunction of the coolant temperature sensor itself or the thermostat.

P0118

Code P0118 appears in the event of a discrepancy between the parameters of the coolant temperature sensor signal and the parameters of the norm specified by the manufacturer. The causes of the problem are as follows:

Damage or failure of the temperature sensor;

Bursts in the circuit supplying the sensor.

The malfunction is accompanied by an indication on the dashboard "Check Engine", the transition of the engine to emergency operation, difficulties with starting in a cold state and unstable operation up to the optimum warm-up temperature. It is possible to establish the exact problem through diagnostics.

P0120

Code P0120 in the Toyota computer diagnostics report indicates a malfunction in the throttle position sensor circuit. It is recorded by the electronic model of engine control during self-diagnostics if there is an excess of voltage values higher than the norm specified by the manufacturer. As a result, the engine is put into emergency operation mode, the driver notes unstable idle speed and increased fuel consumption. The reasons may be as follows:

breaks or shorts in the wiring supplying the throttle position sensor;

mechanical damage to the throttle body;

software malfunctions of the electronic engine control module.

P0121

Code P0121 appears if the electronic control module, during self-diagnosis, has detected an excess of the voltage parameters in the circuit supplying the throttle valve sensor to the parameters set by the manufacturer. The factors triggering the problem can be as follows:

• There are short circuits in the circuit;
• The sensor is damaged and needs to be replaced;
• The system is depressurized, air enters it.

As a result, the car suffers from a loss of dynamics, and the engine can go into emergency operation.

P0122

Code P0122 indicates a malfunction of the throttle sensor. It is detected by the electronic engine control unit during self-diagnostics. A voltage level that does not correspond to the specified manufacturer is a symptom of the following malfunctions:

• Short circuit in the VTA1 circuit;
• VC chain break;
• Oxidized or loose contacts in the TP1 wiring harness;
• There is damage to the throttle position sensor;
• The signal return circuit is open.

The tactics for eliminating the problem depends on the cause that caused it. First of all, diagnostics are carried out.

P0123

Code P0123 is fixed by the system if, in the process of self-diagnosis, it detects deviations of voltage parameters from those specified by the manufacturer in the circuit supplying the throttle position sensor. The problem can appear for a number of reasons:

There is a short circuit in the harness supplying the sensor;

There is mechanical damage to the throttle position sensor;

Contact faults;

Interruptions in the E2 circuit supplying the sensor.

P0125

Code P0125 is fixed by the system if the temperature of the antifreeze does not reach the values required for effective circulation of fuel in a closed loop during the allotted period of time. The reasons for this error are as follows:

Insufficient amount of time allotted for optimal warm-up;

The connector of the coolant temperature sensor is loose;

Antifreeze temperature sensor is corroded;

There are gaps in the wiring between the sensor and the machine control module;

Antifreeze deficiency due to leakage or insufficient volume.

P0128

The P0128 code appears if the antifreeze does not heat up to the optimum temperature for a certain period of time. This phenomenon causes the motor to warm up too slowly. The malfunction is detected by the electronic control system in the process of self-diagnosis, guided by the air temperature outside. Possible causes of breakage are as follows:

• Low coolant level;
• Insufficient time allotted for warm-up by the driver;
• Breakage of the antifreeze temperature sensor;
• Interruptions in the circuit supplying the temperature sensor.

P0130

If the code P0130 appears in the vehicle computer diagnostics report, then there is one or another malfunction in the wiring of the oxygen sensor. It is fixed by the electronic engine control unit in the process of self-diagnosis, if it does not receive a signal from it. As a result, it puts the engine into emergency operation, which reduces its power and increases fuel consumption. The reasons for the error can be as follows:

the sensor connector is not connected or damaged;

malfunctions of the fuel pump or the need to replace the filter of the fuel supply system;

depressurization of the vacuum, fuel or air system;

breakdown of the fuel pressure regulator.

P0132

The appearance of the P0132 code in the computer diagnostics report indicates a breakdown of the oxygen sensor. In the process of self-diagnosis, the electronic engine control unit detects long-term deviations in the voltage parameters of its circuit, the norm set by the manufacturer. The error is accompanied by:

• indication "Check Engine" on the dashboard;
• increased fuel consumption;
• unstable motor operation;
• transition of the internal combustion engine to emergency mode.

The reasons for the above may be as follows:

• short circuit or interruptions in the circuit supplying the sensor;
• increased temperature of gasoline combustion;
• loosening of the sensor connectors.

P0133 

The appearance of the P0133 code in the computer diagnostics report indicates that the permissible time for receiving data by the electronic control module from the oxygen sensor has been exceeded. The time period for providing data is set by the manufacturer, and if the readings do not correspond to the specified parameter, an error occurs, which is recorded by the system. Its reasons may be as follows:

• Lambda probe malfunctions;
• Breakdown of elements of the fuel supply system;
• Violations of the tightness of the intake / exhaust manifolds;
• Interruptions in the electrical wiring between the probe and the electronic control unit.

P0134

The appearance of the P0134 code indicates a malfunction of the oxygen sensor. In the process of self-diagnosis, the electronic engine control unit detects non-compliance with the standard set by the manufacturer, which may arise for the following reasons:

• Short circuit in the circuit supplying the sensor;
• Contact malfunction;
• Circuit breaks in the area supplying the sensor.

In a situation where there is a short circuit or a break, the ECU will issue another code - P0171, indicating that the air-fuel mixture is lean. You can establish the cause of the error by contacting the oxygen sensor wiring and connector diagnostics.

P0136 

If the code P0136 appears in the Toyota computer diagnostics report, you need to diagnose the oxygen sensor wiring. Its registration is carried out by the electronic engine control unit in the process of self-diagnosis, if the voltage readings of the sensor do not correspond to those set by the manufacturer. As a result, the engine is put into emergency operation, which reduces its power and increases fuel consumption. The reasons for the error can be as follows:

breaks or shorts in the wiring supplying the sensor;

failure of the second oxygen sensor;

malfunctions in the exhaust system;

leakage of gases from the exhaust system.

P0138 

The appearance of the P0138 code in the computer diagnostics report indicates that the voltage in the circuit of the second oxygen sensor has exceeded the norm allowed by the manufacturer. If, during self-diagnosis, the electronic control unit detects a voltage higher than 1.2V for more than ten seconds, it fixes the corresponding error. It means that the oxygen level in the exhaust gases is abnormally low. The reasons for this phenomenon may lie in the following:

• emergency operation of the engine;
• breaks in the wiring supplying the oxygen sensor;
• malfunction of the second sensor.