Reverse Gear Ratio Incorrect
The P0736 code indicates that the powertrain control module (PCM) has detected an incorrect gear ratio when the transmission is in reverse. This typically means the transmission is slipping or not engaging properly in reverse, often due to internal mechanical issues, low fluid, or a faulty solenoid.
01. Most Common Causes
- Low or contaminated transmission fluid
- Faulty shift solenoid
- Internal transmission damage (worn clutches/bands)
- Faulty transmission control module (TCM)
02. Symptoms You Will Notice
- Vehicle does not move in reverse or moves sluggishly
- Hesitation or slipping when shifting into reverse
- Check Engine Light illuminated
- Transmission may go into limp mode
03. 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 transmission.
Step 3: Perform a transmission pressure test and solenoid resistance check.
Step 4: If no external issues, internal inspection or professional rebuild may be required.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
No, driving with P0736 can cause further transmission damage. It's best to have it towed to a shop.
How much does it cost to fix?▼
Costs range from $150 for a fluid change to $400+ for solenoid replacement, or up to $2,000+ for a rebuild.