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P2ADD: Reductant Tank Temperature Sensor B Circuit Intermittent/Erratic

Severity
Low
System
Vehicle Systems

What Does P2ADD Mean?

P2ADD is a diagnostic trouble code indicating: Reductant Tank Temperature Sensor B Circuit Intermittent/Erratic. This code relates to the vehicle systems system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P2ADD

Common Causes

Frequently Asked Questions

What does P2ADD mean?
P2ADD indicates: Reductant Tank Temperature Sensor B Circuit Intermittent/Erratic. The vehicle's computer has detected that the Reductant Tank Temperature Sensor B is not operating within its expected parameters and stored this diagnostic trouble code.
Can I drive with code P2ADD?
Yes, P2ADD 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 P2ADD?
Repair costs for P2ADD 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 B connectors
  • 🔧 Repair chafed or damaged wiring in Reductant Tank Temperature Sensor B circuit
  • 🔧 Replace Reductant Tank Temperature Sensor B if failing intermittently
  1. 1
    Find your vehicle above

    Click your make and model for real owner reports and common causes specific to your vehicle.

  2. 2
    Check for recalls

    Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.

  3. 3
    Get a professional diagnosis

    A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

Related Codes

P2A00 O2 Sensor Circuit Range/Performance Bank 1 Sensor 1 P2A01 O2 Sensor Circuit Range/Performance Bank 1 Sensor 2 P2A02 O2 Sensor Circuit Range/Performance Bank 1 Sensor 3 P2A03 O2 Sensor Circuit Range/Performance Bank 2 Sensor 1 P2A04 O2 Sensor Circuit Range/Performance Bank 2 Sensor 2 P2A05 O2 Sensor Circuit Range/Performance Bank 2 Sensor 3 P2A06 O2 Sensor Negative Voltage Bank 1 Sensor 1 P2A07 O2 Sensor Negative Voltage Bank 1 Sensor 2 P2A08 O2 Sensor Negative Voltage Bank 1 Sensor 3 P2A09 O2 Sensor Negative Voltage Bank 2 Sensor 1