- P0705 is a diagnostic trouble code (DTC) for 'Transmission Range Sensor Circuit Malfunction (PRNDL Input)'. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation.
- What does this mean? OBD2 Code P0705 Toyota definition: The park/neutral position (PNP) switch includes a transmission range switch. The transmission range switch detects the selector lever position when the shift lever is in the N or P shift position and sends a.
- The diagnostic trouble code (DTC) P0705 in your vehicle’s computer means that the sensor (Range Switch) that monitors what gear the transmission is in has experienced a fault and set a code in the Engine Control Module (ECM). Need a replacement transmission? Get an estimate for replacement transmissions and local installation.
Looking for the meaning of P0705 code? You’re in the right place. In this article, we talk about the meaning, cause and possible solutions to the “Transmission Range Sensor Circuit Malfunction”, or P0705 Code.
Meaning and Cause of P0705 Code
PNGase F is the most effective enzymatic method for removing almost all N-linked oligosaccharides from glycoproteins. PNGase F (Glycerol-free) is an amidase, which cleaves between the innermost GlcNAc and asparagine residues of high mannose, hybrid, and complex oligosaccharides. OBD2 Code P0705 BMW definition: The park/neutral position (PNP) switch includes a transmission range switch. The transmission range switch detects the selector lever position when the shift lever is in the N or P shift position and sends a signal to the Transmission Control Module (TCM).
First things first – is this a generic or a manufacturer-specific Diagnostic Trouble Code (DTC)? Because it starts with P0xxx, the P0705 is a generic powertrain code, meaning it covers all vehicles with OBD-II systems, or all newer makes and models (1996 and newer). Normally, generic DTCs will exhibit similar symptoms across all newer vehicles, however, the specific diagnostic and repair steps will vary from model to model.
What Does the P0705 Code Mean?
This DTC indicates a problem with a part of your vehicle known as Transmission Range Sensor or Transmission Gear Position switch. Another common name for this part is Park Neutral Position switch, or PNP switch. When the Transmission Control Module (TCM) receives an erroneous input from this particular sensor, your Engine Control Module (ECM) will light up your Check Engine Light.
To explain in more detail, we need to address the location and function of the Transmission Range Sensor (TRS). Usually, it’s found on the outside of the transmission box, but sometimes, it can be located inside the transmission on the valve body. Its function is to inform the TCM, and by extension the ECM, of gear selection or the position of the shift lever. If the ECM doesn’t receive an input, P0705 occurs. There is another way this DTC may set – if the ECM receives an illogical input. For instance, if you’re driving 60 mph but the TRS informs the ECM that the vehicle is in reverse, the code P0705 will occur. Likewise, if the TRS becomes so faulty that it tells the ECM that it’s in more than one gear at the same time, the code P0705 will set.
Finally, there are different types of TRS and it’s important to differentiate between each as diagnostic and repair steps will vary from type to type:
- The Contact TRS
This type consists of a set of wires that communicate with the ECM, letting it know the exact shift lever position. This is possible because each position of the shifter has its own wire.
- The Pressure Range Switch
This type is mounted on the valve body of the transmission. There are various passages for the transmission fluid which get open and closed as the shifter is moved, which is how this type of the sensor knows when the position moves.
- The Variable Resistor
Containing a series of resistors tied to one voltage output, this type is designed to absorb a certain amount of voltage. Because each gear has its own resistor that will be used depending on the shifter positioning (park, reverse, neutral, drive, low, or PRNDL), the sensor knows when and which position moves.
But What Causes the Code P0705?
Sine there are several types of the TRS, there can be various causes for the occurrence of this DTC. The most common ones include:
- Short or open in the TRS circuit
- Loose or damaged TRS
- Defective transmission range sensor
- Loose or damaged connector at the external TRS
- Misadjusted shift linkage
- Contaminated/bad transmission fluid
- Blockage in the internal valve body TRS port
- Faulty transmission valve body
- Low voltage
- Damaged TCM or ECM (rare)
Symptoms of the P0705 Code
The P0705 code can have a variety of symptoms, including the following:
- Check Engine Light is on
- The vehicle may experience a no start condition
- Harsh/erratic shifting
- The vehicle may start in any gear
- Poor fuel economy
- The car may only start in neutral
- No reverse lights
- The vehicle may not go in or out of gear
Diagnosing and Repairing the P0705 Code
Although a very common cause for this DTC is a defective TRS, this is not always the case. Often, the problem will lie in a misadjusted TRS, where the solution is to simply adjust it. However, mechanics will sometimes replace the sensor in error. This is a costly mistake. Another common mistake when diagnosing the P0705 code is not checking the fluid level and condition. If the fluid is low, contaminated or both, the code P0705 code can occur, plus several other problems. To avoid these common but easily solvable issues, it’s crucial to start and perform the diagnostic and repair process following the right steps.
Note: If you have an extensive auto knowledge, you may be able to do this with the help of a friend. Otherwise, it’s highly advisable you hire a professional as diagnosing and repairing P0705 code can be tricky.
- Plug the OBD-II scanner into the DLC port. Record all stored codes and freeze frame data.
- Start the inspection by checking the fluid level and condition, as well as the condition of the transmission. If all is well there, inspect the electrical connection on the TRS. This is especially important if the switch is mounted externally because it’s susceptible to road dirt, grime and moisture which can damage the connection. Also, verify that the TRS has a proper voltage.
- For the Contact type TRS
Probe each wire, and at the same time, change the gears to verify there is correct output (this is why at least two people, preferably mechanics should do the inspection, diagnosis and repair of this DTC). If all works well, there will be a change in the voltage every time the gear position is changed.
- For the Variable Resistor Type
Using a multimeter, measure the amount of voltage that the reference wire outputs. This needs to be done because the reference wire sends a different voltage to the ECM every time the gear is changed. So, if the voltage doesn’t change or appears to be nonexistent, the problem is either in the sensor itself or reference wire.
- For the Pressure Range Switch Type
Because most of these types of sensors use a ground connection as their form of output, a mechanic needs to verify which wires are actually output to ground. To do this, gear position needs to be changed so that the valve body lets the transmission fluid go through different passages. As it travels through one of the passages, the TRS will output that ground. Of course, to find out which wire corresponds to which gear, you’ll need a wiring diagram of the sensor.
So, the following fixes can help resolve the P0705 code:
- Repairing a short or open in the TRS circuit
- Adjusting a misadjusted TRS
- Replacing a damaged TRS
- Changing the transmission fluid and/or filter
- Rarely, replacing the (faulty) ECM.
Additional Information about the P0705 Code
Because there are different types of TRS, inspecting, diagnosing and repairing P0705 may require a lot of work. For this reason, and also because two people are usually necessary to inspect the vehicle, it’s recommended you hire a professional to deal with this DTC.
Code Explanations
These links will provide more detailed insights into what code means in your vehicle:
P0303 Code
P0456 Code
P0155 Code
P0430 Code
Be sure to also read our essential guide to the best OBD2 Scanner.
Sources:
- P0705 OBD-II Trouble Code – YourMechanic
- How to Read and Understand OBD Codes – wikiHow
MORE TO READ
Description
What does this mean?
P0705 Ford F150
OBD2 Code P0705 BMW definition:
The park/neutral position (PNP) switch includes a transmission range switch. The transmission range switch detects the selector lever position when the shift lever is in the N or P shift position and sends a signal to the Transmission Control Module (TCM).
Symptoms
Possible sumptoms of OBD code P0705 BMW
– Engine Light ON (or Service Engine Soon Warning Light)
Causes
Possible causes of OBD code P0705 BMW
– Open or short park/neutral position switch circuit – Poor park/neutral position switch circuit connection – Misadjusted park/neutral position switch – Park/neutral position switch may be faulty The Error code is generally activated on detection of the following conditions: The transmission range switch detects the selector lever position and sends a signal to the TCM.
The OBD2 Code Information Be Applicable For BMW:
2013 BMW X6 M50d,2013 BMW X6,2013 BMW X5 eDrive Concept,2013 BMW X5 Security Plus Concept,2013 BMW X5 M50d,2013 BMW X4 Concept,2013 BMW X1,2013 BMW Pininfarina Gran Lusso Coupe,2013 BMW M6 Coupe US-Version,2013 BMW M6 Coupe,2013 BMW M6 Convertible,2013 BMW M5 US-Version,2013 BMW M550d xDrive Touring,2013 BMW M550d xDrive,2013 BMW M4 Coupe Concept,2013 BMW M135i,2013 BMW Active Tourer Outdoor Concept,2013 BMW 7 ActiveHybrid,2013 BMW 750Li,2013 BMW 7-Series,2013 BMW 640i Gran Coupe,2013 BMW 640d xDrive Coupe,2013 BMW 6-Series Gran Coupe UK Version,2013 BMW 6-Series Gran Coupe,2013 BMW 5 ActiveHybrid,2013 BMW 4-Series Coupe Concept,2013 BMW 3 ActiveHybrid,2013 BMW 3-Series Touring,2013 BMW 3-Series Long Wheelbase,2013 BMW 1-Series 3-door,2012 BMW i8 Spyder Concept,2012 BMW i3 Coupe Concept,2012 BMW Zagato Roadster Concept,2012 BMW Zagato Coupe Concept,2012 BMW M5 UK Version,2012 BMW M5,2012 BMW M3 DTM Champion Edition,2012 BMW M3 CRT,2012 BMW M135i Concept,2012 BMW Active Tourer Concept,2012 BMW 650i Convertible,2012 BMW 640d Coupe,2012 BMW 6-Series Coupe,2012 BMW 6-Series Convertible,2012 BMW 3-Series,2012 BMW 1-Series Urban Line,2012 BMW 1-Series Sport Line,2012 BMW 1-Series Coupe,2012 BMW 1-Series Convertible,2012 BMW 1-Series,2011 BMW i8 Concept,2011 BMW i3 Concept,2011 BMW Z4,2011 BMW X5,2011 BMW X3 xDrive35i,2011 BMW X3 xDrive20d,2011 BMW X3,2011 BMW X1 xDrive28i,2011 BMW M5 Concept,2011 BMW M3 Pickup Concept,2011 BMW M3 GTS,2011 BMW M3 Frozen Gray,2011 BMW ConnectedDrive Concept,2011 BMW ActiveE Concept,2011 BMW 750Li,2011 BMW 5-Series Touring,2011 BMW 5-Series Long-Wheelbase,2011 BMW 5-Series,2011 BMW 335is Coupe,2011 BMW 328 Hommage Concept,2011 BMW 3-Series Coupe,2011 BMW 3-Series Convertible,2011 BMW 1-Series M Coupe US Version,2011 BMW 1-Series M Coupe UK Version,2011 BMW 1-Series M Coupe MotoGP Safety Car,2011 BMW 1-Series M Coupe,2010 BMW Z4 UK Version,2010 BMW Z4 GT3,2010 BMW Z4,2010 BMW X6 M,2010 BMW X6 ActiveHybrid,2010 BMW X5 M,2010 BMW X1,2010 BMW Scooter C Concept,2010 BMW M3,2010 BMW Gran Coupe Concept,2010 BMW ActiveE Concept,2010 BMW 7 ActiveHybrid,2010 BMW 760Li,2010 BMW 7-Series High Security,2010 BMW 6-Series Coupe Concept,2010 BMW 5-Series Gran Turismo,2010 BMW 5-Series ActiveHybrid Concept,2010 BMW 320d EfficientDynamics,2010 BMW 135i Coupe,2010 BMW 135i Convertible,2009 BMW X6 UK Version,2009 BMW X6,2009 BMW X5 xDrive35d BluePerformance,2009 BMW X5 Security Plus,2009 BMW X5 Security,2009 BMW X3 Limited Sport Edition,2009 BMW M3 Saloon UK Version,2009 BMW M3 Race Version,2009 BMW M3 Convertible UK Version,2009 BMW M3 Convertible,2009 BMW EfficientDynamics Concept,2009 BMW 750Li,2009 BMW 730d,2009 BMW 7-Series UK Version,2009 BMW 7-Series,2009 BMW 5-Series Gran Turismo Concept,2009 BMW 335d BluePerformance,2009 BMW 3-Series UK Version,2009 BMW 3-Series Touring UK Version,2009 BMW 3-Series Touring,2009 BMW 3-Series,2009 BMW 1-Series Convertible UK Version,2008 BMW X5 M-Package,2008 BMW X1 Concept,2008 BMW M5 Touring,2008 BMW M3 Sedan US-Version,2008 BMW M3 Sedan,2008 BMW M3 Coupe US-Version,2008 BMW M3 Coupe UK Version,2008 BMW M3 Coupe,2008 BMW M1 Concept,2008 BMW M-Zero Concept,2008 BMW GINA Light Visionary Model Concept,2008 BMW EfficientDynamics Concept,2008 BMW Coupe Range,2008 BMW 7-Series ActiveHybrid Concept,2008 BMW 650i Convertible,2008 BMW 635d Coupe,2008 BMW 530i,2008 BMW 5-Series Touring,2008 BMW 5-Series Security,2008 BMW 5-Series,2008 BMW 135i Coupe,2008 BMW 128i Convertible,2008 BMW 1-Series Range,2008 BMW 1-Series Coupe,2008 BMW 1-Series Cabrio,2008 BMW 1-Series 5-door,2008 BMW 1-Series 3-door,2007 BMW X6 Concept,2007 BMW X6 ActiveHybrid Concept,2007 BMW X5 4.8i,2007 BMW X5 3.0d,2007 BMW X3,2007 BMW M6 Convertible Neiman Marcus,2007 BMW M6 Cabrio,2007 BMW M5,2007 BMW M3 Concept,2007 BMW Hydrogen 7,2007 BMW Concept CS,2007 BMW 530Li,2007 BMW 335i Coupe,2007 BMW 335i Convertible,2007 BMW 1-Series tii Concept,2006 BMW Z4 Roadster,2006 BMW Z4 M Roadster,2006 BMW Z4 M Coupe UK version,2006 BMW Z4 M Coupe,2006 BMW Z4 Coupe,2006 BMW Mille Miglia Coupe Concept,2006 BMW Art Car Collection,2006 BMW 7 Series High Security,2006 BMW 760Li,2006 BMW 750i,2006 BMW 750Li with Shadow Line,2006 BMW 750Li,2006 BMW 330i,2006 BMW 325i Touring,2006 BMW 320si E90 WTCC,2006 BMW 320si,2006 BMW 320d Touring,2006 BMW 320d,2005 BMW Z4 Coupe Concept,2005 BMW X5,2005 BMW X3 EfficientDynamics Concept,2005 BMW X3,2005 BMW M6,2005 BMW M5,2005 BMW H2R,2005 BMW 630i,2005 BMW 545i Touring,2005 BMW 530xi Touring,2005 BMW 530xi,2005 BMW 530d Touring,2005 BMW 330i M-Package,2005 BMW 320d Touring,2005 BMW 130i M-Package,2005 BMW 130i,2005 BMW 120i UK Version,2005 BMW 120i,2005 BMW 120d,2004 BMW X5 4.8is,2004 BMW X5 4.4i,2004 BMW X3 3.0i,2004 BMW X3 2.0d,2004 BMW H2R Hydrogen Racecar,2004 BMW Concept M5,2004 BMW 645Ci Convertible,2004 BMW 645Ci,2004 BMW 5 Series,2004 BMW 530i,2004 BMW 530d,2004 BMW 330Ci Coupe,2004 BMW 330Ci Convertible,2004 BMW 330Cd Coupe,2004 BMW 325Ci Coupe,2004 BMW 320Cd Convertible,2004 BMW 318Ci Convertible,2003 BMW Z4 2.5i,2003 BMW Z4,2003 BMW M3 CSL,2003 BMW 760Li E66,2003 BMW 325ti Compact,2003 BMW 3-Series Compact,2002 BMW xActivity Concept,2002 BMW X5 4.6is,2002 BMW CS1 Concept,2002 BMW 7 Series,2002 BMW 760i,2002 BMW 760Li Yachtline Concept,2002 BMW 740d,2002 BMW 730d,2002 BMW 3-Series Touring,2002 BMW 3-Series,2001 BMW Z8
P0705 Code
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