P0705: Transmission range sensor circuit malfunction (PRNDL input)
An OBD-II trouble code for a fault in the circuit of the transmission range sensor, which reports the gear selector’s position (P, R, N, D, L).
How to read it
P0705 is one of the standard OBD-II trouble codes stored when the check engine light comes on. A generic list of OBD-II codes names it “Transmission Range Sensor Circuit Malfunction (PRNDL Input)”; a Hyundai service bulletin calls it “Transmission Range Sensor Circuit”.
Also searched as: code P0705, P0705 code.
Code names follow SAE J2012. Manufacturers add codes of their own, and the same code can have several causes: the vehicle’s service information or a qualified mechanic can say what it means for a particular car.
What the monitor checks
The federal rule’s catch-all covers any other electronic powertrain component that sends input to or takes commands from the on-board computer and has a measurable effect on emissions.
What the manual says to do
Ford’s F-150 manual says that if the indicator stays on, the vehicle should be serviced at the first available opportunity, and that continued driving with it on can mean higher emissions, lower fuel economy, rougher running and more costly repairs.
How the light goes out
Under the federal rule, the check engine light may go out once the fault has not come back during three trips in a row in which its monitor runs without finding it. The system may erase the stored code if the same code has not been registered again in at least 40 engine warm-up cycles.
Read next
- Next in OBD-II trouble codesP0720: Output speed sensor circuitAn OBD-II trouble code for a fault in the circuit of the automatic transmission’s output speed sensor.
- The same shape in Accessibility symbolsClosed captioning symbol (CC)CC means closed captioning: the dialogue and other sounds of a programme shown as text on screen, which viewers can turn on or off. It is mainly for people who are deaf or hard of hearing.
More OBD-II trouble codes
The same shape elsewhere
Browse symbols drawn with letters and numbers or squares and rectangles.
Sources
- Generic OBD-II Trouble Codes (scanned reference list), Internet Archive (item generic-and-honda-trouble-codes), P07xx list (codes, then names in the same order)
- Hyundai technical service bulletin 17-01-064: Inhibitor Switch Replacement (November 2017), Campaign 17-01-064 (T2M), Hyundai Motor America; published by NHTSA, Description
- 40 CFR 86.1806-05, On-board diagnostics (2012 edition), 40 CFR 86.1806-05, US Government Publishing Office (Code of Federal Regulations), § 86.1806-05(b) and (c)
- 2020 F-150 Owner's Manual, Ford Motor Company, Instrument Cluster; On-Board Diagnostics (OBD-II)
Researched, edited and approved by Rory Hansen before publishing. Last reviewed October 9, 2026. How we research
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