P07D4

Transmission Mode Switch F Circuit

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$28–89 (est.)

Symptoms

Incorrect operation of transmission modes
Check Engine Light Is On
The car goes into emergency mode
Transmission modes do not switch
Delays when shifting gears

Causes

Open or short circuit in the circuit
Faulty mode switch
Wiring Harness Problems
Poor connection on connectors
TCM malfunction

How to Fix

Check the integrity of the wiring harness
Check the contacts on the connectors
Measure switch resistance
Check the voltage supply to the switch
Replace switch if necessary

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