P0707 Transmission range sensor circuit signal too low

Transmission range sensor circuit low

P0707 in short

P0707 means the computer sees a range sensor signal that is too low, often an open circuit. Bulletins blame a blown fuse, a stretched or misadjusted shift cable, a misadjusted switch, or pinched wiring. Have it inspected soon, and check the fuse and cable before replacing the switch.

The transmission range sensor tells the computers which position the gear lever is in. P0707 sets when the signal voltage stays below what the computer expects, which usually means an open circuit, a missing feed or a switch that is not making contact.

Hyundai lists P0707 as a range switch open circuit and points to an improperly adjusted or failing switch, with the engine unable to start in Park or Neutral. Mazda found a pinched wire or a shorting range sensor on the 2009 Tribute.

On Chevrolet and GMC W-Series trucks, many switches replaced for P0707 turned out to have nothing wrong. The most likely causes were an open F-18 fuse or a stretched or misadjusted shift cable, so check those first.

Most likely causes

  1. Open fuse or stretched or misadjusted shift cable (2007–2010 W-Series)

    Supported by vehicle data
    Why it ranks here
    GM and Isuzu found many switches replaced for P0707 had no fault, and name an open F-18 fuse or a stretched or misadjusted shift cable as the most likely causes.
    What would change this
    Rises on a W-Series truck or if the fuse is blown.

  2. Range switch out of adjustment or failing

    Supported by vehicle data
    Why it ranks here
    Hyundai ties P0707 to an improperly adjusted or operating range switch.
    What would change this
    Rises if the engine will not start in Park or Neutral.

  3. Pinched wire or shorting range sensor (2009 Tribute)

    Supported by vehicle data
    Why it ranks here
    Mazda names a pinched speed sensor wire or an intermittently shorted range sensor for P0706 or P0707.
    What would change this
    Rises on a 2009 Tribute.

  4. Open or damaged range sensor wiring

    Common general cause
    Why it ranks here
    A low signal is what an open circuit looks like, so the wiring between the switch and the computer is part of the check.
    What would change this
    Rises if the harness near the transmission is damaged.

What to test first

Start at step 1. Each result tells you what it means and where to go next.

  1. Read codes from the engine and transmission modules with a scan tool that supports both, before anything is cleared.

    Low riskTool: scan tool that reads the transmission module

  2. Check the fuse that feeds the range switch, using the fuse chart in the owner's manual, and have the shift cable adjustment checked.

    Low riskTool: owner's manual fuse chart

  3. With the parking brake set and your foot firmly on the brake, move the lever slowly through every position and watch whether the gear display on the dash follows it. Then check that the engine cranks in Park and in Neutral.

    Use caution

    Warning:Keep the parking brake on and your foot on the brake the whole time. Do not try to start the engine in a drive gear.

Symptoms

  • Check engine light
  • Engine will not start in Park or Neutral
  • Gear display on the dash shows the wrong position
  • Transmission stuck in one gear or reduced power (limp-home mode) Gets more serious: stop and have it checked.

How to fix

  1. Do not clear the code before the transmission module has been read.

  2. Check the range switch fuse before buying a switch. GM found many switches replaced for P0707 had nothing wrong with them.

  3. Have the shift cable adjustment checked, since a stretched or misadjusted cable can set the code.

On your vehicle

Chevrolet

  • 2007–2010 · W-Series

    Supported by vehicle data

    GM/Isuzu IB15-K-002A says many switches replaced for P0707 had no fault, and points to an open F-18 fuse or a stretched or misadjusted shift cable. The GMC W-Series is also covered. The bulletin is on NHTSA, but whether it is still current is not verified, so it is labelled vehicle data rather than confirmed.

  • IB15-K-002AStatus unverified

    Inhibitor switches replaced for P0707 found no trouble

    2007–2010w-series · issued · NHTSA 10083903

    Many switches returned for P0707 had no fault. The most likely causes are an open F-18 fuse or a stretched or misadjusted shift cable, so check the fuse and adjust the cable before diagnosing the code. GMC W-Series and Isuzu N-Series trucks are also listed. Only the NHTSA flat-file summary was reviewed, not the bulletin itself.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

Mazda

  • 2009 · Tribute

    Supported by vehicle data

    Mazda SB-05-006-09 links no-crank and P0706 or P0707 to a pinched speed sensor wire or a shorting range sensor. The bulletin is on NHTSA, but whether it is still current is not verified, so it is labelled vehicle data rather than confirmed.

  • SB-05-006-09Status unverified

    No crank and/or P0706, P0707 or P1702

    2009tribute · issued · NHTSA 10030348

    May be caused by the output shaft speed sensor wire pinched between the main control and the case, or an intermittently shorted range sensor. Only the NHTSA flat-file summary was reviewed, not the bulletin itself.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

Hyundai

  • 1999–2009

    Supported by vehicle data

    Hyundai 09-AT-013 covers P0705, P0707 and P0708 from a misadjusted or failing range switch, with the engine unable to start in P or N, across many models. The bulletin is on NHTSA, but whether it is still current is not verified, so it is labelled vehicle data rather than confirmed.

  • 09-AT-013Status unverified

    Range switch codes P0705, P0707 and P0708

    1999–2009sonata, elantra, santa-fe, tucson, accent · issued · NHTSA 10030984

    An improperly adjusted or operating range switch may set these codes, with the MIL on and the engine unable to start in P or N. Many other Hyundai models are listed. Only the NHTSA flat-file summary was reviewed, not the bulletin itself.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

  • P0700Transmission module requests the check engine light

    Primary / secondary Possible — needs testing

    Likely primary: P0707. On cars with a separate transmission module, a basic code reader may show only P0700, which means the module has stored its own code. P0707 can be that code, so fix P0707 and P0700 goes with it.

  • P0705Fault in the transmission range sensor circuit (gear selector position input)

    Same system Supported by vehicle data

    Hyundai groups P0705, P0707 and P0708 under the same range switch bulletin.

  • P0706Transmission range sensor signal out of range or not plausible

    Shares causes Supported by vehicle data

    Mazda lists P0706 and P0707 under the same bulletin for a pinched wire or a shorting range sensor.

All Transmission codes

P0707 questions

Should I replace the range switch for P0707?

Not first. GM found many switches replaced for P0707 had nothing wrong, and the real cause was a blown fuse or a stretched or misadjusted shift cable.

Sources and review

  1. Toyota Camry Owner's Manual (OM06291U) — Toyota
  2. Hyundai 09-AT-013: range switch codes P0705, P0707, P0708 — Hyundai Motor America / NHTSA ,
  3. Mazda SB-05-006-09: 2009 Tribute no crank and/or P0706, P0707, P1702 — Mazda North American Operations / NHTSA ,
  4. Cal. Code Regs. Tit. 13, § 1968.2 — Malfunction and Diagnostic System Requirements (OBD II) — California Air Resources Board (via Cornell LII)
  5. GM/Isuzu IB15-K-002A: inhibitor switches replaced for P0707 found no trouble — General Motors / Isuzu / NHTSA ,
  6. On-Board Diagnostic Trouble Codes (generic code title list) — Delaware Division of Motor Vehicles
  7. DTC P0700 — Saab 9-5 (9650) 2010 Workshop Information System — SaabWISOnline (community rehost of Saab/GM service information)
Last reviewed
Written by
Saurabh K.
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