P205E — Reductant Tank Temperature Sensor A Circuit Intermittent/Erratic

What Does P205E Mean?

P205E is a diagnostic trouble code indicating: Reductant Tank Temperature Sensor A Circuit Intermittent/Erratic. This code relates to the powertrain system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P205E

⚠️ Check Engine Light (MIL) illuminated
⚠️ Reductant Tank Temperature Sensor A signal cutting in and out
⚠️ Related system working sometimes but not consistently
⚠️ Reduced engine performance

Common Causes

🔍 Loose or intermittent connection at Reductant Tank Temperature Sensor A
🔍 Wire chafing causing intermittent contact
🔍 Reductant Tank Temperature Sensor A failing under heat or vibration
🔍 Corroded connector pins with partial contact

Frequently Asked Questions

What does P205E mean?

P205E indicates: Reductant Tank Temperature Sensor A Circuit Intermittent/Erratic. The vehicle's computer has detected that the Reductant Tank Temperature Sensor A is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P205E?

Yes, P205E is generally safe to drive with in the short term. However, it should still be addressed to pass emissions testing and prevent potential secondary issues.

How much does it cost to fix P205E?

Repair costs for P205E typically range from $30 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 reseat all Reductant Tank Temperature Sensor A connectors
🔧 Repair chafed or damaged wiring in Reductant Tank Temperature Sensor A circuit
🔧 Replace Reductant Tank Temperature Sensor A if failing intermittently

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.

P205E: Reductant Tank Temperature Sensor A Circuit Intermittent/Erratic