OBD-II trouble code
P0707: Transmission Range Sensor "A" Circuit Low
SAE J2012 circuit low: a measured value on the range-sensor circuit is below the normal span, with the circuit connected. On the Ford PWM table for the 6R80, 6R140, 10R60, and 10R80 it is a low duty cycle. Hyundai/Kia TSB 19-AT-024H calls the same number an open on the 6-speed vehicles it lists. The chart decides which test to run.
Quick facts
- System
- Powertrain
- Category
- Transmission / Shift Control
- Severity
- Medium severity
- Drivable
- Usually safe to drive short-term
- Repair cost range
- $250 – $900 (transmission position sensor replacement)
- DIY difficulty
- Intermediate DIY
Browse every code in P0700–P0799, or start from the full code library.
What does P0707 mean?
Circuit low means the monitor saw a measurement below its normal span. It does not mean every range sensor is a switch that grounds a wire, and it does not mean the connector is wet.
In the 2024–2025 Ford PCED, the table headed 6R80, 6R140, 10R60, and 10R80 calls P0707 a duty cycle out of range low, under 8%. Another block in that book says under 10%. Use the block that names the transmission. The 2013–2020 Fusion 6F35 Pinpoint Test J lists the P0707 trigger as a range-sensor circuit open or short to ground, and the circuit checks in that pinpoint use the ohm limits printed there. GM's 14 OBDG04 TCM Summary Tables set P0707 when POS1 or POS2 voltage is under 0.127 V for 200 ms, with battery voltage above 9 V and at or below 18 V. That file does not name a vehicle, and the threshold stays with that table.
Hyundai/Kia TSB 19-AT-024H (November 2019) defines P0707 as a range-switch open circuit on the 6-speed vehicles the bulletin lists, and it defines P0708 as a short or multiple inputs. Treating P0707 as 'the grounded one' and P0708 as 'the open one' will send the test the wrong way on those cars. The bulletin's vehicle list includes the Accent, Azera, Elantra, Elantra Coupe, Elantra GT, Kona 2.0L, Santa Fe, Santa Fe Sport, Sonata, Tucson, and Veloster years printed in it. Confirm the VIN is on that list before using those definitions.
Common causes
- Corroded, wet, or unlatched terminals in the range-sensor connector
- A harness rub that shorts a sense wire to ground, on a calibration whose chart calls P0707 a short to ground
- An open sense circuit, on a calibration whose chart calls P0707 an open — including the 6-speed vehicles in Hyundai/Kia TSB 19-AT-024H
- A PWM range sensor whose duty cycle is below the window in the Ford table for the 6R80, 6R140, 10R60, or 10R80
- A failed range sensor, after the connector and the harness have been checked against the chart
- A module input, after the wiring test in that chart is clean
Symptoms
- Check engine light on
- No crank, or a crank in a range that should not crank
- Gear display blank or wrong
- The transmission holds the failsafe gear that calibration uses
- Reverse lamps that do not follow the lever
- The range PID stays at one end of its scale while the lever moves
Diagnostic steps
- 1.Read the monitor description for this transmission before unplugging anything. A Ford PWM low duty cycle, a Fusion open-or-short, a 14 OBDG04 voltage under 0.127 V, and a Hyundai 6-speed open are four different tests.
- 2.Set the parking brake and chock the wheels. Compare the lever detents with the range PID. Have a passenger read the PID, or record it. Do not watch the tool from the driver's seat.
- 3.Ignition off. Unplug the range-sensor connector and inspect both halves for water, green corrosion, a swollen seal, and terminals that push out. Clean, reseat, and see whether the PID changes. This is the check that does not require the pan.
- 4.Follow the pinpoint for this VIN. On the Fusion 6F35, Pinpoint Test J checks the range circuits for an open and a short to ground with the limits printed in that test, and it checks sensor supply only after the main control cover is off. Do not copy those ohm limits onto another transmission.
- 5.On the 6-speed vehicles in Hyundai/Kia TSB 19-AT-024H, treat P0707 as the open-circuit definition in that bulletin and follow its flow. Do not ohm a Ford PWM sensor pin-to-ground and call a low reading a short. A PWM sensor is a frequency and duty-cycle signal.
- 6.If the chart puts the switch inside the pan, the connector and the external harness still come first. Dropping the pan is the step after those circuits test bad at the case. Support the vehicle on a lift or stands, and let the fluid cool. Fluid at operating temperature will scald.
- 7.Replace the sensor only after the chart's wiring checks fail at the sensor and pass in the harness. Clear the code and confirm the PID tracks every detent, and that the engine cranks only in the ranges that chart allows.
Repair cost
$250 – $900 (transmission position sensor replacement)
The printed pair prices the sensor, not a connector repair. RepairPal's transmission position sensor average, updated 3 September 2026, is $394–$511 parts and labor. YourMechanic rows retrieved 25 October 2026 run from a 2013 Ford Fusion at $269 to a 2012 Audi S5 at $852, with a 2012 Jeep Grand Cherokee at $306 and a 2014 Ford F-350 at $501 in between. $250–$900 is a round envelope around that set. YourMechanic's description places the switch on the side of the case, so an in-pan assembly is outside the pair. No published total was found for a pigtail repair.
Estimate your repair
Run the numbers for your vehicle
Open the Repair Cost Estimator with transmission range sensor / neutral safety switch replacement preselected. Adjust labor rate and vehicle category to fit your situation.
DIY vs shop
This is an intermediate DIY job. It usually involves diagnostic steps, specialty parts, and some careful work in tight spaces. If you have the tools and a service manual or trustworthy video for your specific vehicle, it is achievable in a weekend. Otherwise, a competent independent shop will be faster.