What Does P219F Mean?
The PCM has detected that cylinder #4 is contributing unevenly to engine power compared to other cylinders. This imbalance affects smooth engine operation and is typically detected through crankshaft acceleration monitoring.
Common Causes
30%
Faulty or worn spark plug on cylinder #4
25%
Weak ignition coil or poor connection on cylinder #4
25%
Fuel injector clogged, leaking, or malfunctioning on cylinder #4
15%
Low compression due to worn piston rings, valves, or head gasket on cylinder #4
5%
Vacuum leak or intake manifold leak affecting cylinder #4
Diagnostic Steps
1
Step 1: Perform cylinder #4 spark plug inspection and replacement if worn or fouled
2
Step 2: Swap ignition coil from cylinder #4 with another cylinder and retest to see if problem follows the coil
3
Step 3: Test fuel injector operation on cylinder #4 using noid light or injector balance test
4
Step 4: Perform compression and leak-down test on cylinder #4 to assess mechanical condition
5
Step 5: Inspect for intake manifold leaks and vacuum leaks specific to cylinder #4
Estimated Repair Cost
$150 - $1,200
Parts + labor, varies by vehicle and location
The PCM has detected that cylinder #4 is contributing unevenly to engine power compared to other cylinders. This imbalance affects smooth engine operation and is typically detected through crankshaft acceleration monitoring.
The most common cause of P219F (Cylinder #4 Imbalance Error) is: Faulty or worn spark plug on cylinder #4
Typical repair costs for P219F range from $150 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle is safe to drive short distances but may experience rough idle, reduced power, and decreased fuel economy. Extended operation may cause catalytic converter damage.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P219F to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Powertrain
System
Engine Management / Ignition / Fuel System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
