Powertrain, generic · Transmission

P07D5 Transmission Mode Switch F Circuit Low

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

Transmission mode switches select alternative shift programs such as sport, winter, eco or tow/haul; J2012 numbers them A to F without saying which button is which. Switch F is the sixth and last of the family after A (P071A–P071C), B (P071D–P071F), C (P078F, P07CC, P07CD), D (P07CE–P07D0) and E (P07D1–P07D3). No manufacturer document available to us uses switches C to F; GM reads its analog drive mode switch under its own codes (low below 21–29 % of 5 V, high from 94 %, two trips), newer selectors under P05D0–P05D3. P07D5 means the signal of switch F is below its lower limit – a short to ground or a button stuck against ground. The opposite is P07D6.

Likely causes

Signal wire shorted to ground (chafed harness)
Button stuck pressed (switching to ground)
Moisture or corrosion in the button or connector
Control module input

Symptoms

  • Mode F program cannot be selected or stays active
  • Mode indicator missing or wrong
  • Transmission stays on the normal program

Repair estimate

DifficultyEasyDIY possible
Parts and labour€20–250
Time0.3–1.5 h

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

Parts involved

transmission mode switchswitch wiringtransmission control module

Related codes

P07D4P07D6P07D2P07CCP071B

References: law.cornell.edu, gsi.ext.gm.com.