P099D

Shift Solenoid H Control Circuit Range/Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$28–89 (est.)

Symptoms

Incorrect gear shifting
Jerking during acceleration
Switching the box to emergency mode
Check Engine light comes on
Reduced engine power

Causes

Solenoid H fault
Open or short circuit in control circuit
Poor contact in connectors
Low transmission fluid level
Transmission control unit malfunction

How to Fix

Check the level and condition of the transmission fluid
Check the integrity of the solenoid control circuit
Check connections and connectors
Test solenoid resistance
If necessary, replace solenoid H

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