Transmission Gear 2 Incorrect Ratio
The P0732 code indicates that the powertrain control module (PCM) has detected an incorrect gear ratio when the transmission is commanded to shift into 2nd gear. This typically means the transmission is slipping or not engaging properly, often due to internal wear, low fluid, or solenoid issues.
01. Most Common Causes
- Low or contaminated transmission fluid
- Faulty shift solenoid
- Worn or damaged transmission internal components (clutches, bands)
- Faulty transmission control module (TCM) or wiring issues
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Harsh or delayed shifting
- Transmission slipping out of 2nd gear
- Reduced fuel economy
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 the transmission.
Step 3: Perform a transmission pressure test to identify internal leaks or solenoid issues.
Step 4: If no external issues found, remove transmission pan to inspect for debris and check shift solenoids.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive with P0732 as it can cause further transmission damage and lead to complete failure.
How much does it cost to fix?▼
Costs vary widely: a simple fluid change may be $150, while solenoid replacement can be $300-$400. Major internal repairs can exceed $1,500.