P079B — Transmission Friction Element B Slip Detected

What Does P079B Mean?

P079B is a diagnostic trouble code indicating: Transmission Friction Element B Slip Detected. This code relates to the transmission system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P079B

⚠️ Check Engine Light (MIL) illuminated
⚠️ Transmission Friction Element B Slip Detected not functioning as expected
⚠️ Related system may be in fail-safe mode
⚠️ Harsh or delayed shifting

Common Causes

🔍 Faulty Transmission Friction Element B Slip Detected
🔍 Wiring or connector issue in Transmission Friction Element B Slip Detected circuit
🔍 Related mechanical or electrical fault
🔍 ECM/PCM issue (rare)

Frequently Asked Questions

What does P079B mean?

P079B indicates: Transmission Friction Element B Slip Detected. The vehicle's computer has detected that the Transmission Friction Element B Slip Detected is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P079B?

Only short distances if absolutely necessary. P079B affects a critical system and should be diagnosed within a few days to avoid further damage.

How much does it cost to fix P079B?

Repair costs for P079B typically range from $150 to $500, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

🔧 Inspect Transmission Friction Element B Slip Detected and related wiring
🔧 Replace faulty Transmission Friction Element B Slip Detected

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

P079B: Transmission Friction Element B Slip Detected