Error P0705 in the self-diagnosis system of Toyota vehicles means a malfunction in the transmission range sensor circuit (PRNDL input). The appearance of such a DTC lets the vehicle owner know that the parking/neutral position sensor assembly is malfunctioning or there is a problem with the wiring harness.
If this error is detected, it is necessary to find the exact cause as quickly as possible and eliminate the malfunction. The fact is that the normal operation of this type of sensor allows you to determine in what position the gear shift lever is located. This makes it possible to ensure that the engine is running only when the shift lever is located at the N or P marks. The park/neutral position sensor detects what state the shift lever is in and signals this to the ECM. This ensures the safe operation of the power unit.
- If one signal is received, it means that the shift lever is in position P, N, NSW, R or D.
- If more than one signal is received, this indicates that the sensor or related devices are faulty. In this case, the ECM turns on the MIL and DTC P0705 is stored in the vehicle's self-diagnosis system.
What does P0705 mean?
Trouble code P0705 indicates that the Engine Control Module (ECM) or Transmission Control Module (TCM) has received an incorrect input signal from the Transmission Shift Position Sensor (TRS), which is also known as the Pressure Switch, Park-Neutral Position (PNP) Switch, gear selector or range selection sensor PRNDL. The automatic transmission selector position sensor tells the ECM or TCM about the position of the gearshift lever. These sensors are most often mounted on the outside of the transmission, but some are located inside the transmission on the valve body.
This error code will appear if the ECM does not receive or receives an erroneous input signal. For example, if the vehicle is traveling at 50 mph and the transmission shift position sensor tells the ECM that it is in reverse, a P0705 code will appear. There are also cases when the automatic transmission selector position sensor informs the ECM that the vehicle is moving in several gears at the same time. In this case, error code P0705 will also appear.
There are three types of automatic transmission selector position sensors:
- A contact type sensor that tells the ECM the exact position of the shift lever. Different wires are used to determine the position of the gear shift lever.
- A pressure switch that is bolted to the transmission valve body. It opens and closes various transmission fluid passages when the gearshift lever is moved. When changing gear, this switch detects and activates a specific transmission fluid path.
- A variable resistor that is designed to absorb a certain amount of voltage. Each gear has its own resistor that will be used depending on the position of the gear shift lever (PRNDL).
Troubleshooting in the technical center
To resolve the P0705 error, you must follow a proven algorithm.
- First, computer diagnostics of the condition of the vehicle component is performed: dealer equipment is used.
- The condition and functionality of the sensor's electrical network is checked.
- Check the position of the park/neutral position sensor assembly.
- Once the cause is discovered, all necessary repairs are carried out. If necessary, the sensor itself or elements of other vehicle systems are replaced.
To make an appointment at a time convenient for you, contact the sales managers of technical centers by phone or use the callback request form on the company’s website.
Registration for maintenance
How does a mechanic diagnose a P0705 code?
- The mechanic will check the voltage and ground signal of the automatic transmission selector position sensor.
- Contact type sensor: The mechanic will check each sensor wire (while someone else is shifting gears) and the correct output signal. Every time you change gear, the voltage should also change.
- Variable Resistor: The mechanic will determine the voltage output of the reference wire. Each time a gear is shifted, the voltage reference wire sends a voltage signal to the ECM. If the reference voltage does not change or is absent at all, the problem may be a problem with the sensor or its wires.
- Pressure Switch: The mechanic will check the ground wires and determine which ground wire belongs to which gear. To do this, the mechanic will need a wiring diagram for the sensor. When a gear is shifted, the valve body forces transmission fluid through various passages. As the transmission fluid passes through a certain channel, the automatic transmission selector position sensor will output a certain ground wire.
Symptoms of P0705
For safety reasons, you can only start the car in the neutral or park position of the automatic transmission. The sensor may send a false signal to the automatic transmission control unit, and the car may not start.
In most cases, the transmission will not select the gear you select. Here are some of the most common symptoms.
- There is no engine start condition.
- Stuck in one gear.
- The Check Engine/Check Transmission light comes on.
- Incorrect gear shifts.
- The reverse lights do not light up.
Error P0705 automatic transmission selector position sensor input signal PRNDL
Definition of error code P0705 Error P0705 indicates a malfunction of the automatic transmission selector position sensor electrical circuit (problem with the PRNDL input signal). What does the P0705 code mean? The P0705 code indicates that the engine control module (ECM) or transmission control module (TCM) has received an incorrect input signal from the transmission shift position sensor (TRS), which is also known as the pressure switch, park position switch. neutral (PNP), gear select sensor or range select sensor PRNDL .
The automatic transmission selector position sensor tells the ECM or TCM about the position of the gearshift lever. These sensors are most often mounted on the outside of the transmission, but some are located inside the transmission on the valve body. This error code will appear if the ECM does not receive or receives an erroneous input signal. For example, if the vehicle is traveling at 50 mph and the transmission shift position sensor tells the ECM that it is in reverse, a P0705 code will appear.
There are also cases when the automatic transmission selector position sensor informs the ECM that the vehicle is moving in several gears at the same time. In this case, error code P0705 will also appear. There are three types of automatic transmission selector position sensors: A contact-type sensor that tells the ECM the exact position of the gearshift lever. Different wires are used to determine the position of the gear shift lever.
A pressure switch that is bolted to the transmission valve body. It opens and closes various transmission fluid passages when the gearshift lever is moved. When changing gear, this switch detects and activates a specific transmission fluid path.
A variable resistor that is designed to absorb a certain amount of voltage. Each gear has its own resistor that will be used depending on the position of the gear shift lever (PRNDL). Causes of error P0705 Short circuit or open circuit of the automatic transmission selector position sensor Malfunction of the automatic transmission selector position sensor Malfunction of the ECM or TCM Incorrect adjustment of the gear shift lever Contamination of the transmission fluid Damage to the transmission valve body What are the symptoms of error P0705? In some cases, the car may not start. For driver safety, the automatic transmission selector position sensor will allow the car to be started only in the “park” or “neutral” position. This function was provided to prevent the car engine from starting if the owner is not driving.
There may be problems shifting gears into and out of gear. Gears may not shift correctly. The Check Engine light will come on. How does a mechanic diagnose a P0705 trouble code? The mechanic will check the voltage and ground signal of the automatic transmission selector position sensor.
Contact type sensor: The mechanic will check each sensor wire (while someone else is shifting gears) and the correct output signal. Every time you change gear, the voltage should also change.
Variable Resistor: The mechanic will determine the voltage output of the reference wire. Each time a gear is shifted, the voltage reference wire sends a voltage signal to the ECM. If the reference voltage does not change or is absent at all, the problem may be a problem with the sensor or its wires.
Pressure Switch: The mechanic will check the ground wires and determine which ground wire belongs to which gear. To do this, the mechanic will need a wiring diagram for the sensor.
When a gear is shifted, the valve body forces transmission fluid through various passages. As the transmission fluid passes through a certain channel, the automatic transmission selector position sensor will output a certain ground wire. Common mistakes when diagnosing the P0705 error code The most common mistake when diagnosing this code is not understanding that the cause of most transmission problems is contamination of the transmission fluid. When diagnosing this error code, you first need to check the condition of the transmission fluid.
How serious is the P0705 code? This error is not very serious, but if the Check Engine light comes on, the vehicle will not be able to pass the emissions test.
Also, if the Check Engine light comes on, the car may not start. Gears may not shift correctly. The vehicle may go into automatic transmission protection mode and will not be able to travel faster than 40 mph. What repairs can fix the P0705 code? Repairing a shorted or open transmission selector position sensor circuit Replacing a faulty TCM Replacing a faulty ECM Replacing the transmission fluid and filter Shift lever adjustment Additional comments for troubleshooting P0705 It is recommended that you check the shift lever adjustment and the condition of the transmission fluid before replacing any parts.
Symptoms of malfunction
The main driver symptom of P0705 is the MIL (Malfunction Indicator Light). It is also called Check engine or simply “check light”.
They can also appear as:
- The “Check engine” warning light on the control panel will light up (the code will be stored in memory as a malfunction).
- The reverse lights may not work.
- In some cases, the engine will only start in neutral.
- There may be problems shifting gears into and out of gear.
- Floating speed when changing gears.
- The transmission may display a delay in engagement.
- Increased fuel consumption.
The severity of the P0705 code ranges from moderate to severe. The engine may stop starting. It is also possible for the transmission to go into emergency mode.
On which cars is this problem most common?
The problem with code P0705 can occur on different machines, but there are always statistics on which brands this error occurs more often. Here is a list of some of them:
- Acura (Acura TL)
- Audi
- BMW (BMW X5, E53)
- Chevrolet (Chevrolet Captiva, Lacetti, Metro)
- Ford (Ford Maverick, Focus, Escape)
- Honda (Honda Accord, SRV, Civic)
- Hyundai (Hyundai Grand Starex, Creta, Santa Fe, Solaris, Sonata, Starex, Terracan, Elantra, i30)
- Jeep (Jeep Grand Cherokee)
- Kia (Kia Optima, Picanto, Rio, Sid, Sorento, Soul, Spectra, Sportage, Cerato)
- Lexus (Lexus is250, rx330, rx350, rx400h)
- Mazda (Mazda Demio, Protégé, Tribute)
- Mercedes (Mercedes w203, w204)
- Mitsubishi (Mitsubishi ACX, Outlander, Lancer, Montero, Pajero)
- Nissan (Nissan Versa, Qashqai, Murano, Note, Teana, Tiida, X-Trail)
- Opel (Opel Astra, Corsa)
- Renault (Renault Duster)
- Rover
- Saab
- Skoda (Skoda Octavia)
- Ssangyong
- Subaru (Subaru Tribeca)
- Suzuki
- Toyota (Toyota Avensis, Camry, Corolla, Land Cruiser, Prado, Rav4, Highlander, Yaris)
- Volkswagen (Volkswagen Touareg)
With fault code P0705, you can sometimes encounter other errors. The most common ones are: P0121, P0123, P0301, P0401, P0700, P0706, P0707, P0708, P0709, P0720, P1706, P1740, P2135.
Recommended Tools to Fix P0705
- To read the fault code: FOXWELL NT301 scanner. You may need an OBD2 scanner that can read the transmission control unit.
- Car charger: with battery repair function or simple.
- To check the integrity of the wiring and sensor, use a regular digital multimeter or a more expensive device.
- To clean the connector and contacts, use an electrical contact cleaner.
- For advanced diagnostics - an oscilloscope.
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