P0706 Transmission Range Sensor Circuit Range/Performance

P0706 points to a range or performance problem in the transmission range sensor circuit. The PRNDL or gear-position signal does not match expected behavior.

Code details

Generic OBD-II · P0

System: Transmission
Code type: Generic (SAE / ISO controlled)
Standard: SAE J2012 / ISO 15031-6

Diagnostic boundary

A diagnostic trouble code reports that a monitored test failed. It does not prove one specific part is bad, and manufacturer logic can add vehicle-specific conditions.

Do not replace the sensor until adjustment, linkage, wiring, and module data have been checked.

Symptoms of P0706

Harsh, delayed, or slipping shifts, or being stuck in one gear.
Check-engine light, sometimes with limp-home mode.
Flaring RPM or a shudder under load.

Common causes of P0706

Low or degraded transmission fluid.
A failing speed sensor, shift solenoid, or pressure-control circuit.
Wiring, connector, or internal hydraulic/mechanical faults.

Useful checks before replacing parts

Compare scan-tool gear selector data with actual shifter position through every range.
Inspect range sensor adjustment, connector condition, wiring, linkage adjustment, and fluid intrusion where applicable.
Review no-start, backup lamp, shift quality, or limp-mode symptoms that can share range-sensor data.

Related OBD-II codes

These nearby transmission entries can help compare wording and pin down the fault area.