P03BA
Cylinder 4 Pressure Variation Low
P03BA is an OBD-II diagnostic trouble code meaning: Cylinder 4 Pressure Variation Low. Common causes: spark plug fault, compression problems in the cylinder. Estimated repair cost: $56–167.
Symptoms
- Misfire in cylinder 4
- Unstable idle
- Reduced engine power
- Increased fuel consumption
Causes
- Spark plug fault
- Compression problems in the cylinder
- Valves leaking
- Piston ring wear
- Fuel injector malfunction
How to Fix
- Check the condition of the spark plug
- Measure the compression in the cylinder
- Inspect the valves and piston group
- Check the operation of the fuel injector
Related codes
Error P03BA by Vehicle Brand
FAQ
What does the P03BA code mean?
P03BA is an OBD-II diagnostic trouble code that indicates: Cylinder 4 Pressure Variation Low
What causes a P03BA error code?
The most common causes of P03BA include: Spark plug fault; Compression problems in the cylinder; Valves leaking; Piston ring wear.
How do I fix a P03BA diagnostic trouble code?
To fix P03BA: Check the condition of the spark plug. Measure the compression in the cylinder. Inspect the valves and piston group. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P03BA?
Limited driving only, diagnose soon
How much does it cost to fix P03BA?
The estimated repair cost for P03BA is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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