P2495: EGR Cooler Bypass Position Sensor Circuit High Bank 1

Severity

Medium

System

Powertrain

Last reviewed: Jan 1, 0001 Last updated: Jan 1, 0001

Methodology: We combine code standards with complaint and reliability patterns, then review for clear, vehicle-first diagnosis steps.

Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).

Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.

What Does P2495 Mean?

P2495 is a diagnostic trouble code indicating: EGR Cooler Bypass Position Sensor Circuit High Bank 1. This code relates to the powertrain system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P2495

⚠️ 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 P2495 mean?

P2495 indicates: EGR Cooler Bypass Position Sensor Circuit High Bank 1. 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 P2495?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P2495 for extended periods may cause additional problems.

How much does it cost to fix P2495?

Repair costs for P2495 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
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3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.