P273D

Gear Shift Control Module A Supply Voltage High

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–167 (est.)

Symptoms

Incorrect gear shifting
Delays when shifting gears
Check Engine Light Is On
The car goes into emergency mode

Causes

Generator malfunction
Problems with the voltage regulator
Short circuit in TCM power supply
Wiring harness damage
Shift control module malfunction

How to Fix

Check generator voltage
Check voltage regulator
Inspect the wiring harness for damage
Check the power supply circuit of the shift control module
Replace the shift control module if necessary.

Related codes

P273E P273F P2740