P249A — EGR Cooler Bypass Position Sensor Circuit High Bank 2

What Does P249A Mean?

P249A is a diagnostic trouble code indicating: EGR Cooler Bypass Position Sensor Circuit High Bank 2. This code relates to the powertrain system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P249A

⚠️ Check Engine Light (MIL) illuminated
⚠️ EGR Cooler Bypass Position Sensor reading stuck at maximum value
⚠️ Related system operating erratically or in default mode
⚠️ Reduced engine performance

Common Causes

🔍 Short to voltage in EGR Cooler Bypass Position Sensor wiring harness
🔍 Corroded or water-damaged EGR Cooler Bypass Position Sensor connector
🔍 Faulty EGR Cooler Bypass Position Sensor outputting maximum voltage
🔍 Damaged wiring rubbing against metal components
🔍 ECM/PCM internal fault (rare)

Frequently Asked Questions

What does P249A mean?

P249A indicates: EGR Cooler Bypass Position Sensor Circuit High Bank 2. The vehicle's computer has detected that the EGR Cooler Bypass Position Sensor is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P249A?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P249A for extended periods may cause additional problems.

How much does it cost to fix P249A?

Repair costs for P249A typically range from $20 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 and repair EGR Cooler Bypass Position Sensor wiring for short to voltage
🔧 Clean or replace corroded EGR Cooler Bypass Position Sensor connector
🔧 Replace faulty EGR Cooler Bypass Position Sensor

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.

P249A: EGR Cooler Bypass Position Sensor Circuit High Bank 2