P03B1
Cylinder 3 Pressure Variation High
P03B1 is an OBD-II diagnostic trouble code meaning: Cylinder 3 Pressure Variation High. Common causes: defective spark plugs, problems with the ignition coil. Estimated repair cost: $56–278.
Symptoms
- Misfire in cylinder 3
- Unstable engine operation
- Power Loss
- Increased fuel consumption
Causes
- Defective spark plugs
- Problems with the ignition coil
- Fuel injector malfunction
- Compression leak in cylinder
- Pressure sensor damage
- Valve contamination
- Broken cylinder head gasket
How to Fix
- Check spark plugs and replace if necessary
- Check the ignition coil on cylinder 3
- Check the condition of the fuel injector
- Perform a cylinder compression test
- Check the tightness of the combustion chamber
- Check the wiring to the pressure sensor
- Scan the system for other errors
Related codes
Error P03B1 by Vehicle Brand
FAQ
What does the P03B1 code mean?
P03B1 is an OBD-II diagnostic trouble code that indicates: Cylinder 3 Pressure Variation High
What causes a P03B1 error code?
The most common causes of P03B1 include: Defective spark plugs; Problems with the ignition coil; Fuel injector malfunction; Compression leak in cylinder.
How do I fix a P03B1 diagnostic trouble code?
To fix P03B1: Check spark plugs and replace if necessary. Check the ignition coil on cylinder 3. Check the condition of the fuel injector. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P03B1?
Limited driving only, diagnose soon
How much does it cost to fix P03B1?
The estimated repair cost for P03B1 is $56–278. Actual cost depends on your vehicle, location, and labor rates.
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