P2C91

Crankcase Ventilation System - Hose B Disconnected

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$6–28 (est.)

Symptoms

Unstable engine idling
Reduced engine power
Increased oil consumption
Check Engine light comes on
Noises from the engine area

Causes

Mechanical damage to the hose
Loosening the hose
Wear of rubber joints
Incorrect hose installation after service
Exposure to high temperatures on the hose

How to Fix

Visual inspection of hose B of the crankcase ventilation system
Checking the fastenings and condition of rubber seals
Replacing a damaged hose if necessary
Checking the tightness of the system after repair
Resetting the error code and test starting the engine

Related codes

P2C90 P2C92 P052E