Powertrain, generic · Transmission

P0701 Transmission Control System Range/Performance

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

P0701 means the transmission control system works outside its expected range or its function is implausible – without a circuit fault. What exactly is checked is up to the manufacturer; no GM, Ford, Saab or bulletin document available to us describes the strategy. The only manufacturer evidence is Ford's engine module list for 6.8 L E- and F-Series trucks, where P0701 is stored without the check engine light. Typically the control cannot plausibly achieve the requested gear, pressure or torque, and the transmission goes into limp mode. Individual components have their own codes (P0705 ff range sensor, P0715 ff speed sensors, P0750 ff solenoids).

Likely causes

Transmission control faulty internally or software
Implausible input signals (speed or range sensor) without own circuit fault
Wrong fluid level or quality – hydraulics do not respond
Harness or connector with contact resistance

Symptoms

  • Transmission warning (at Ford no check engine light)
  • Limp mode with fixed gear or missing gears
  • Harsh or irregular shifts

Repair estimate

DifficultyHardWorkshop job
Parts and labour€100–1,500
Time1–5 h

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

Parts involved

transmission control moduletransmission

Related codes

P0700P0702P0613P0705P0715P0720

References: law.cornell.edu, roushcleantech.com.