Shift Solenoid E Performance or Stuck Off
The P0771 code indicates that the transmission control module (TCM) has detected a malfunction in the shift solenoid E circuit or that the solenoid is stuck in the off position. This solenoid controls hydraulic pressure to engage a specific gear, and when it fails, the transmission may not shift properly, leading to harsh shifts, slipping, or limp mode.
01. Most Common Causes
- Faulty shift solenoid E
- Wiring or connector issues in the solenoid circuit
- 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
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Check transmission fluid level and condition.
Step 3: Inspect wiring and connectors to shift solenoid E for damage or corrosion.
Step 4: Test solenoid resistance and operation using a multimeter or scan tool.
Step 5: Perform a transmission pressure test to confirm solenoid function.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as the transmission may go into limp mode, causing poor performance and potential damage.
How much does it cost to fix?▼
Repair costs typically range from $150 to $400, including parts and labor, depending on the vehicle and shop rates.