P079B OBD-II: Transmission Friction Element "B" Slip Detected

P079B Severity

Urgent

Should you fix P079B yourself?

Identifying an OBD code is just the start of a complete diagnostic routine. Most trouble codes are caused by a sensor reporting a value that is out of range. Just replacing a sensor may not fix underlying issues. Be sure to understand the code, the part or system in your car that the code refers to, and the risks of delaying professional repair.

Proper diagnosis will save you time and money on unnecessary repairs.

Urgent codes indicate immediate action is necessary. These are urgent and significant malfunctions that can cause severe damage to the vehicle or harm the driver and passengers.

P079B Summary Find a Repair Shop P079B Details Ask RepairPal CarGenius Other OBD-II Codes

What causes OBD-II fault code P079B?

The Hybrid Control Module monitors the transmission clutches for slippage. If the Control Module detects any slippage in first gear or reverse, code P079B will be set. The hybrid control module may also place the vehicle in "limp home", limiting available engine/transmission performance to prevent additional damage.

OBD II Fault Code

OBD II P079B

OBD-II Code Transmission may not shift properly is defined as a Transmission Friction Element "B" Slip Detected

Transmission may not shift properly Symptoms

Engine may enter limp home mode (reduced performance)
Transmission may not shift properly

Common Problems That Trigger the P079B Code

Internal transmission failure
Transmission fluid level is low
Transmission valve body solenoid failure

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Other OBD-II Codes

P079A: Transmission Friction Element "A" Slip Detected P0799: Pressure Control Solenoid "C" Intermittent P0798: Pressure Control Solenoid "C" Electrical P0797: Pressure Control Solenoid "C" Stuck On P0796: Pressure Control Solenoid "C" Performance/Stuck Off

OBD II Fault Code

OBD II P079B

OBD-II Code Transmission may not shift properly is defined as a Transmission Friction Element "B" Slip Detected

Transmission may not shift properly Symptoms

Engine may enter limp home mode (reduced performance)
Transmission may not shift properly

Common Problems That Trigger the P079B Code

Internal transmission failure
Transmission fluid level is low
Transmission valve body solenoid failure

P079B OBD-II: Transmission Friction Element "B" Slip Detected

Should you fix P079B yourself?

What causes OBD-II fault code P079B?

Need a P079B diagnosis? Trust our experts.

OBD II Fault Code

Transmission may not shift properly Symptoms

Common Problems That Trigger the P079B Code

Ask our experts about P079B.

Other OBD-II Codes

OBD Code Resources

Need a P079B diagnosis? Trust our experts.

OBD II Fault Code

Transmission may not shift properly Symptoms

Common Problems That Trigger the P079B Code