P236B — Cylinder 12 Pressure Too Low

What Does P236B Mean?

P236B is a diagnostic trouble code indicating: Cylinder 12 Pressure Too Low. This code relates to the powertrain system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P236B

⚠️ Check Engine Light (MIL) illuminated
⚠️ Cylinder 12 Pressure Too Low not functioning as expected
⚠️ Related system may be in fail-safe mode
⚠️ Reduced engine performance

Common Causes

🔍 Faulty Cylinder 12 Pressure Too Low
🔍 Wiring or connector issue in Cylinder 12 Pressure Too Low circuit
🔍 Related mechanical or electrical fault
🔍 ECM/PCM issue (rare)

Frequently Asked Questions

What does P236B mean?

P236B indicates: Cylinder 12 Pressure Too Low. The vehicle's computer has detected that the Cylinder 12 Pressure Too Low is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P236B?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P236B for extended periods may cause additional problems.

How much does it cost to fix P236B?

Repair costs for P236B typically range from $80 to $300, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

🔧 Inspect Cylinder 12 Pressure Too Low and related wiring
🔧 Replace faulty Cylinder 12 Pressure Too Low

1
Find your vehicle above
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2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

P236B: Cylinder 12 Pressure Too Low