Breakdowns periodically occur in cars of all makes, produced by any manufacturer. The diagnostic system of the Toyota Rav 4 displays errors in the form of codes, so the driver can independently decipher and eliminate some malfunctions. This saves on going to the car service.
Toyota Rav4 driver can independently decipher and eliminate errors.
Article content:
How to diagnose Toyota Rav4 errors
Types of errors Toyota Rav 4
General faults
Transmission errors
Sensor malfunction
Electronics fault
Two digit codes
Breakdown of the frequent errors of Toyota Rav 4
С1201
C1223
С1241
С1280
С1298
С1441
C1299
B279a
В1421
В2799
U011b
Р0012
Р0037
Р0138
Р0171
P0420
P0627 on diesel
Fault 41
P264a
P1047
Р1049
Р1155
P1603
P1604
Р1605
Р1589
Р1750
Р2195
P2238
Р2646
Awd error
Charge the battery
4wd
ABS error
Airbag malfunction
4lo
TRS error
How to clear errors in Toyota Rav 4
How to Diagnose Errors in Toyota Rav4
The car is equipped with 3 groups of dynamic connectors. Depending on the year of manufacture, the elements may be located both in the cabin and under the hood.
Diagnostic connector in the cabin
Also, the diagnosis of the machine can be performed without special technical means. For work, use a wire, which is bent in a letter U.
The diagnosis is performed in the following way:
Disconnect the ignition system of the car. Remove the hood, remove the cap of the DLC 1. On the cover there should be the inscription Diagnostic, the list of connectors.
The previously prepared wire is inserted into the sockets marked with codes E1, TE1. If there is a DLC3 port in the cabin, sockets CG, TC are used for diagnosis.
Start the car and pay attention to the CHECK indicator. After deciphering the code, find out which problem occurred in the car.
Types of errors Toyota Rav 4
Faults are divided into:
general breakdowns;
problems in the work of the transmission (gearbox);
breakdowns of electronic components;
Problems in the sensors.
Malfunctions can also occur in the transmission.
General faults
The table will help to study such breakdowns:
Rav4 error codes Error code decoding
B126A Starter control unit malfunction or failure
B1608 With this code, the system reports problems with airbags. If these symbols appear, check the sensors and squibs, and the wires that connect them to the vehicle electrical system.
B1801 Driver's side airbag circuit damaged
4134 The error occurs on vehicles manufactured after 2011 when read by an unsuitable scan tool. In addition, the code may appear when the ABS system is broken. In order to clarify the cause, it is necessary to perform diagnostics using a suitable device.
A799 There is no such error in the official instruction manual of the Rav 4. It occurs when an unsuitable scan tool is used.
P004B Left turbine malfunction
P004C Turbocompressor malfunction. Caused by reduced voltage in the onboard network. The error will be eliminated by inspecting the compressor unit.
P004D One of the turbocharger solenoids is defective
P011B Coolant or air intake temperature is high. These values appear on the screen when the sensors of the respective blocks are not working properly. Check these parts.
P0017 Controller correlation malfunction. The malfunction is due to crankshaft and camshaft misalignment.
P0093 Indicates a gasoline or diesel fuel leak. The problem occurs when the tank is ruptured or the fuel filter rams are broken. The injectors should also be checked.
P0441 Fuel vapor recovery system clogged
P0442 Gasoline leak detection caused by a breach in the tank integrity
P0446 Failure of the fuel vapor recovery unit or purge unit. The code may be displayed if the emission sensor is broken. First of all you need to check all onboard network lines. The cause may be an open circuit in the controller power supply.
P0456 Gasoline or diesel fuel vapour leakage
P0741 Clutch position not correct
P0773 Occurs on vehicles with robot transmission. Caused by solenoid E failure. The problem occurs due to short circuit or damage of the part installed in the winding. The work to eliminate the error begins with cleaning the contacts, disassembly of the transmission unit. Sometimes the solenoids need to be replaced.
P0820 Occurs when the gear selector malfunctions.
P1238 Error appears due to incorrect operation of one of the pump circuits. The unit needs to be checked and the filter needs to be checked.
P1248 Indicates reduced power or deactivation of the power unit. The error occurs when there is a malfunction in the exhaust system.
P1262 Code indicates failure of second turbocharger sensor. It is necessary to inspect all pipes of the system, assess the controller operability.
P1601 ECM temperature too high
P1602 Control system detects a critical loss of battery power. Check and recharge the battery.
P1635 On older vehicles, this error is detected when the axle and tire positions are incorrect and the operating values are out of tolerance
P2002 Engine filter clogged
P2463 Diesel engine filter clogged. Such an error is accompanied by the engine malfunctions: independent stopping, slows down while pressing on the gas pedal, loss of power. It is necessary to evaluate filter cleanliness and replace it if it is damaged.
P2646 Valve actuator control system malfunction
C120A Code indicates incorrect ECU settings. Caused by outdated program version
C1207 Incorrect adjustment of the starter mechanism. The error is accompanied by problems with engine starting.
C1208 Wrong steering wheel position. If the sensor of the corresponding block has been recently changed, it may be uncalibrated. Check also the integrity of the circuit with which the part is connected.
C1515 Torque controller has not been calibrated or adjusted
C1223 The code is considered common for ABS system faults. There are many causes for the error, ranging from controllers to the control unit.
C1238 Indicates that there is contamination in the gap between the rotor and the wheel controller on the left side. Cleaning the plug and contacts will help to get rid of the fault.
C1242 VSC and ABS units malfunction. Check if the control units of these nodes are in good working order and the sensor pins are clean.
C1377 Error may be caused by the capacitor module on the microprocessor board.
C1401 General faults in the anti-skid system
C1441 Stability system malfunction. The cause must be sought in the booster unit.
C1452 Pressure drop in the accumulator. Need to check the unit thoroughly, the tubes connected to it.
C1542 Problems with anti-skid module. Check:
wheel sensors;
Anti-skid control unit;
Wires of control unit controllers and ABS module;
Control module terminals.
C2540 The error indicates the hybrid module has reduced power. The code does not occur on injectors. Detecting the cause of the problem is quite difficult, you need to check the vehicle carefully.
Transmission errors
When malfunctions occur in this unit, the following codes are displayed:
Error Decoding
B2281 The error is detected when there are problems with shifting the selector into park mode. The causes are:
Failure of the speed sensor;
Gear actuator jamming;
Loop breakage or damaged contacts;
malfunction of the control unit due to software obsolescence;
Interruption of communication between engine and gearbox control elements.
P0504 Transmission control unit malfunction
P0909 The error is due to a malfunction:
Selector unit stroke sensor;
Drive module or shifter;
automatic transmission control unit malfunction;
Wear or damage to the shifter pivot or fork rod.
P0910 Code is displayed when the following faults occur:
failure of the selector or shifter drive unit;
a short circuit in the transmission motor belt;
failure of the TCM module.
P1732 In some versions of Toyota vehicles, the code occurs when the transmission parameter limit is reached. It is necessary to check the transmission, train the node.
Faulty sensors
When these elements are out of order, the indicator shows the following values:
Code Decoding
P2A00 Oxygen controller defective
P0031 Lambda probe malfunction. Oxygen sensor on manifold block should be checked.
P0051 Oxygen regulator located on intake manifold is defective. The problem may be caused by broken cables, short circuit or contaminated contacts. If this code appears, carefully check the quality of the electrical circuit components.
P0105 Air pressure sensor failure. It is necessary to inspect the element itself and places of its connection to the onboard network.
P0115 Indicators Toyota Rav 4 such error displays rarely. Its occurrence is facilitated by the breakdown of the controller of the cooling system. Check the element itself and its contacts with the wiring.
P0120 Indicates incorrect operation of the throttle pedal position sensors or throttle unit. When both elements fail, there are problems in the operation of the power unit. The system stops responding to the pedal.
P0121 Pedal position detector error. If the controller is faulty, the code appears on the display panel due to throttle damper malfunction.
P0125 Refrigerant temperature drop. The fault should be looked for in the thermostat or lambda probe.
P0131 The first oxygen sensor is defective or the cable to it is broken.
P0137 Deteriorated signal from oxygen controller output module. Check the second element in bank 1 of the engine.
P0156 Failure of lambda probe 2 located in engine bank 2.
P0330 Damaged detonation controller wiring 2. If the part is broken, starting the engine becomes difficult or impossible. The engine starts stalling at idle speed.
P0500 Speed sensor failure. Corresponding data is incorrectly displayed on the speedometer. If this code occurs, it is necessary to:
inspect the connectors on the wiring harness to the dashboard;
check the cable for speed detector connection;
assess the strength of the connection between the controller and the transmission;
check contacts for short circuit.
P0505 Occurs when the idle speed controller malfunctions. When this problem occurs, the engine runs unstable and the rpm jumps.
P0556 Code indicates malfunction of the pressure sensor located in the brake system. The device sends a signal that differs from the normal indicators. The part needs to be replaced.
P0776 Pressure control valves failure
P0793 Transmission speed regulator malfunction. Occurs due to incorrect resistance or damaged wiring. Sometimes the code appears due to parking controller failure.
P0915 Discrepancy in signals sent from head and auxiliary transmission sensors
P0919 Malfunction of the gear shift control system
P1100 The combination is displayed when the air flow meter is malfunctioning. It is necessary to check the functionality of the unit, make sure the controller is clean. If the sensor is clogged, clean it with a special agent.
P1116 Cooling system temperature sensor failure. Check the contact between the sensor and wiring, check the continuity of the power supply line.
P1121 Occurs at failure of accelerator pedal position detector. The device is sending incorrect signal to the electronic block. Controls need to be checked carefully.
P1125 General throttle controller failure
P1128 Heated Upper Level Sensor Failure
P1150 Failure to recognize heater element of oxygen regulator located in unit 2
P1250 Combination displayed in case of malfunction:
turbocharger control system drive component;
Charge pressure sensor (when parameters deviate from normal values).
B1100 Airbag controllers malfunction. You need to check all cables connected to the control unit. The error is not only caused by the controller, but also by faulty contact of the wires.
B1153 Seat position controller fault. Controllers on driver and passenger side should be checked.
B1421 Driver's side solar radiation sensor failure
C0200 Possible causes:
Damage to the controller supply cable;
Failure of right or left side motor speed controller;
Rotor mechanism malfunction;
Controller installation errors;
Damage to brake cylinder control unit.
Electronics failure
These problems are indicated by the following codes:
Error Meaning
P0010 Camshaft position indicator cables are damaged
P0057 Oxygen sensor heater element supply line breakage. It is not only the wiring that needs to be inspected, but also the contacts. This system often fails when using bad fuel.
P0110 Inlet air heater cable breakage or damage
P0100 Air flow controller supply line malfunction
P0118 Cooling system temperature sensor signal amplification. Appears due to a short circuit, which increases the voltage in the supply line.
P0102 Incorrect or no air flow sensor signal
P0138 Pulse amplification in the circuit of the second oxygen controller. The device is located in 1 bank.
P0037 Common causes of the error:
Heater element failure;
blown probe fuse;
wiring breakage or short circuit in the electric circuit;
oxidation of the contact on the power supply block;
ECM control unit malfunction.
P0038 Oxygen sensor heater component supply cable voltage increase. Check the part located in 1 bank of the motor.
P0045 Occurrence of the code is combined with:
Engine stalling when idling;
Difficulty starting the vehicle;
engine block rubbing when going uphill;
RPM spikes.
The error is associated with damage to the electrical line of the boost pressure control valve.
P0134 Failure to detect signal from oxygen controller. Pulse activity needs to be evaluated.
P0158 Increased pulse output power of the lambda probe 2 located in the 2nd bank.
P0191 Poor signal quality from fuel system sensors
P0192 Impulse weakening from pressure controller located in fuel ramp
P1497 Breakdown of inlet temperature sensor, faulty signal
P0200 Nozzles electrical circuit failure. You will have to check all similar parts.
P0325 Failure of detonation regulator circuit. The engine may malfunction in this case.
P0343 Voltage drop in the area connected to camshaft regulator.
Double digit codes
The following errors fall into this category:
Code Value
11 No power to the EFI module. Check all wires and contacts connected to this unit. Possible faults:
Breakage of elements of the connection block;
Worn insulation or broken wires;
Battery discharge;
EFI unit malfunction;
Software failures.
12 No motor controller signal
13 Same problem as above, but no pulse at high rpm
14 No signal from ignition coil negative element
15 The failure is similar to the previous one. However, another coil fails.
16 Lack of communication with transmission control unit
17 Incorrect pulse from camshaft position controller. Need to check the sensor supply line.
18 Incorrect signal of the second camshaft position controller. Similar diagnostic procedures to the previous ones must be performed.
19 Incorrect operation of accelerator pedal controller
21 Incorrect oxygen regulator signal. The problem should be looked for in the heater element of the left lambda probe.
25 Engine cylinder mixture depletion
29 Lambda probe defective
32 Incorrect pulse from flow meter
36 Change of pressure in combustion chamber
