P273B Fault Code

Transmission Friction Element H Apply Time Range/Performance

• What does that mean?
• Symptoms
• Causes
• Solutions

The P273B fault code indicates an issue with the transmission friction element H apply time range or performance. This fault can affect the overall shifting and responsiveness of the vehicle's transmission system. Proper function of friction elements is crucial for smooth gear transitions and maintaining power transfer from the engine to the wheels.

What are the symptoms of the P273B code?

When experiencing the P273B fault code, you may notice one or more of the following symptoms:

• Slipping transmission or difficulty in shifting gears
• Harsh or rough shifting, especially during acceleration
• Warning lights on the dashboard, including the check engine light
• Decreased fuel efficiency due to improper gear transitions.
• Unusual noises from the transmission while driving.

What causes the P273B code?

The most common causes of the P273B fault code include:

• Worn or damaged transmission components
• Malfunctioning solenoids responsible for applying friction elements
• Low transmission fluid levels or contaminated fluid
• Electrical issues, such as faulty wiring or connectors
• Calibration issues in the transmission control module (TCM).

How to fix P273B?

To resolve the P273B code, the following steps should be taken:

• Check the transmission fluid levels and condition; replace if necessary.
• Inspect the wiring and connectors for any damage or corrosion.
• Use a scan tool to detect faults related to solenoids or sensors, replacing as needed.
• Consider reprogramming or recalibrating the TCM if a software issue is suspected.
• If mechanical failures are found, it may be necessary to replace worn or damaged transmission parts.