Transmission Unable to Engage Reverse Gear
Code P073E indicates that the transmission control module (TCM) has detected a failure to engage reverse gear. This can be caused by low transmission fluid, a faulty shift solenoid, internal transmission damage, or a malfunctioning TCM. The condition may prevent the vehicle from moving in reverse or cause harsh engagement.
1. Symptoms You Will Notice
- Vehicle does not move in reverse
- Delayed or harsh reverse engagement
- Check Engine Light illuminated
- Transmission warning light on
2. Most Common Causes
- Low or contaminated transmission fluid
- Faulty reverse shift solenoid
- Internal transmission mechanical failure
- Malfunctioning transmission control module
3. Step-by-Step Diagnosis
Step 1: Check transmission fluid level and condition; top off or replace if necessary.
Step 2: Scan for additional codes and inspect wiring/connectors to the transmission.
Step 3: Test reverse shift solenoid operation using a scan tool or multimeter.
Step 4: Perform a transmission pressure test to identify internal hydraulic issues.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
No, driving without reverse gear is unsafe and may cause further transmission damage. Have the vehicle towed to a repair shop.
How much does it cost to fix?▼
Costs range from $150 for a simple fluid change or solenoid replacement to $500 or more for internal transmission repairs.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.