Shift Solenoid H Stuck On
The P076C code indicates that the Powertrain Control Module (PCM) has detected that shift solenoid H is stuck in the 'on' position. This solenoid controls hydraulic flow to a specific clutch or band within the automatic transmission. When stuck on, it can cause improper gear engagement, harsh shifts, or transmission slippage. The issue may be electrical (wiring, connector, PCM) or mechanical (blocked solenoid, contaminated fluid).
01. Most Common Causes
- Faulty shift solenoid H
- Shorted or open wiring in solenoid circuit
- Corroded or damaged connector
- Low or contaminated transmission fluid
- Internal transmission mechanical failure
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Harsh or delayed shifts
- Transmission stuck in a single gear (limp mode)
- Decreased fuel economy
- Transmission slipping or overheating
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Inspect transmission fluid level and condition; top off or replace if necessary.
Step 3: Visually check wiring and connectors for damage, corrosion, or loose pins.
Step 4: Test solenoid resistance with a multimeter (typically 20-40 ohms).
Step 5: Perform a solenoid actuation test using a scan tool to verify operation.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended. Driving with a stuck solenoid can cause erratic shifting, transmission damage, or complete failure. Have it diagnosed and repaired promptly.
How much does it cost to fix?▼
Repair costs vary. A solenoid replacement typically ranges from $50 to $150 for parts, plus labor. If internal transmission damage is found, costs can exceed $1,000.