Shift Solenoid E Electrical Malfunction
The P0773 code indicates an electrical fault in the shift solenoid E circuit, which is part of the transmission's hydraulic control system. This solenoid regulates fluid flow to engage specific gears. The powertrain control module (PCM) detects an abnormal voltage or resistance in the solenoid circuit, often due to a short, open, or failed solenoid. This can cause harsh shifting, gear slippage, or transmission stuck in a single gear.
01. Most Common Causes
- Faulty shift solenoid E
- Damaged wiring or connector in solenoid circuit
- Low transmission fluid level or dirty fluid
- Internal transmission mechanical failure
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Harsh or erratic shifting
- Transmission stuck in gear or fails to shift
- Reduced fuel economy
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Inspect transmission fluid level and condition.
Step 3: Visually check wiring and connectors for damage or corrosion.
Step 4: Test solenoid resistance with a multimeter (typically 11-15 ohms).
Step 5: Perform a transmission pressure test if needed.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended. Driving with a faulty shift solenoid can cause transmission damage or unsafe driving conditions due to erratic shifting.
How much does it cost to fix?▼
Repair costs range from $150 to $400, including parts and labor. Solenoid replacement is typically $50-$150, plus diagnostic fees.