What are the common causes of P273B?

A worn friction element H clutch pack. Low transmission fluid pressure at friction element H. A sticking shift valve feeding friction element H. Debris blocking the friction element H apply passage.

Read the friction element H apply time on a scan tool. Check transmission fluid level and condition. Test line pressure at the friction element H circuit. Inspect the friction element H apply passage for debris. Replace the friction element H clutch pack if the apply time stays long. Clear the code and retest.

P273B

Transmission Friction Element H Apply Time Range/Performance

System: Transmission (P code)
Lamp: Check Engine Light
Category: Powertrain - Transmission

What it means

P273B means Transmission Friction Element H Apply Time Range/Performance.

Check these first

A worn friction element H clutch pack
Low transmission fluid pressure at friction element H
A sticking shift valve feeding friction element H
Debris blocking the friction element H apply passage

What to do next

Read the friction element H apply time on a scan tool
Check transmission fluid level and condition
Test line pressure at the friction element H circuit
Inspect the friction element H apply passage for debris
Replace the friction element H clutch pack if the apply time stays long
Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.