P07D0

Transmission Mode Switch D Circuit High

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–89 (est.)

Symptoms

Inability to turn on D mode
Incorrect gear shifting
Check Engine Light Illuminates
Switching the box to emergency mode
Lack of response to selector switch

Causes

Short circuit in switch circuit
D mode switch malfunction
Wiring harness damage
Problems with contacts in connectors
Transmission control module (TCM) malfunction

How to Fix

Check the integrity of wiring and connectors
Measure the resistance of mode switch D
Check voltage in switch circuit
Replace mode switch D if necessary
Flash or replace the TCM if it is faulty

Related codes

P07D1 P07D2 P0700