Powertrain, generic · Transmission

P0706 Transmission Range Sensor A Circuit Range/Performance

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

The transmission range sensor (selector or multifunction switch, PRNDL) reports the selected range; it may be a multi-contact switch with a bit pattern per position, an analog sensor with two opposing voltages adding up to 5 V, or a contactless PWM sensor. Its second channel has its own codes (P2801–P2805). P0706 means the signal is present but implausible. Ford uses it per transmission: for its PWM sensor when the frequency leaves 100–175 Hz (nominal 125 Hz), for the 6F digital sensor when it stays in the transition zone between two positions. Saab's 9-5 (9650), whose sensor sits in the transmission module, flags a sum of the two opposing channels more than 0.29 V away from 5 V, with the lamp in the first trip; adaptations are frozen, the gearbox holds 2nd gear in D and the engine may not restart after switch-off.

Likely causes

Range sensor or transmission module with integrated sensor faulty
Selector cable or sensor misadjusted (position between two ranges)
Contact resistance in sensor supply or ground
Moisture or oil in harness or connector

Symptoms

  • Check engine and/or transmission warning lamp
  • Transmission limp mode, fixed gear, harsh shifts
  • Starting problems in P/N or start interlock
  • Wrong gear indication, reversing light not working

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€80–900
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

transmission range sensorsensor wiringtransmission control module

Related codes

P0705P0707P0708P0709P2801P2805

References: law.cornell.edu, newtonnet.co.uk, saabwisonline.com, roushcleantech.com.