Transmission Friction Element Apply Time Range/Performance
The P273B code indicates that the transmission control module (TCM) has detected that a specific friction element (such as a clutch or band) is taking too long or too short to apply, or its performance is outside the expected range. This can be caused by low transmission fluid, a worn or damaged friction element, a faulty solenoid, or internal hydraulic issues. The TCM monitors the apply time of the friction element during shifts and compares it to a calibrated range; if the time deviates, this code is set.
01. Most Common Causes
- Low or contaminated transmission fluid
- Worn or burnt friction element (clutch or band)
- Faulty shift solenoid or valve body issue
- Internal transmission hydraulic leak or blockage
02. Symptoms You Will Notice
- Harsh or delayed shifting
- Slipping transmission during gear changes
- Check Engine Light or Transmission Warning Light illuminated
- Reduced 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; top off or replace if necessary.
Step 3: Inspect wiring and connectors to the transmission solenoids and TCM.
Step 4: Perform a transmission pressure test and solenoid resistance test.
Step 5: If no external issues found, remove transmission pan and inspect for debris or worn friction material.
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 slip or fail completely, leading to costly repairs.
How much does it cost to fix?▼
Costs vary widely; a simple fluid change may cost $50-$150, while replacing a solenoid or valve body can be $300-$800, and a full transmission rebuild can exceed $2,000.