AutoCodes – Dodge – P20B0 Dodge

P20B0 Dodge Code - Diesel Exhaust Fluid Reductant Pump Temperature Performance

Quick Answer

The Diesel Exhaust Fluid (DEF) Supply Pump Assembly has an internal temperature sensor that reports the internal temperature of the DEF Supply Pump Assembly to the DEF Dosing Control Unit. Common causes include Faulty Diesel Exhaust Fluid (DEF) Supply Pump Assembly, Diesel Exhaust Fluid Supply Pump Assembly harness is open or shorted, Diesel Exhaust Fluid Supply Pump Assembly circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P20B0 Dodge indicates Diesel Exhaust Fluid Reductant Pump Temperature Performance.
Common causes: Common causes include Faulty Diesel Exhaust Fluid (DEF) Supply Pump Assembly, Diesel Exhaust Fluid Supply Pump Assembly harness is open or shorted, Diesel Exhaust Fluid Supply Pump Assembly circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 184

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 15, 2024

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
Comments
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Code P20B0 Dodge Description

The Diesel Exhaust Fluid (DEF) Supply Pump Assembly has an internal temperature sensor that reports the internal temperature of the DEF Supply Pump Assembly to the DEF Dosing Control Unit. This fault is triggered if the DEF Supply Pump Assembly Temperature Sensor is different than the other temperature sensors on the engine. This indicates an internal problem in the DEF Supply Pump Assembly. The Diagnostic Trouble Code (DTC) will be set when the Supply Pump temperature reading is erratic or the Supply Pump internal temperature is not communicated to the Powertrain Control Module by the DEF Dosing Control Unit.

OBDII Code P20B0 Dodge - Diesel Exhaust Fluid Reductant Pump Temperature Performance - AutoCodes.com — P20B0 Dodge Code - Diesel Exhaust Fluid Reductant Pump Temperature Performance

What does this mean?

What are the Possible Causes of the DTC P20B0 Dodge?

Faulty Diesel Exhaust Fluid (DEF) Supply Pump Assembly
Diesel Exhaust Fluid Supply Pump Assembly harness is open or shorted
Diesel Exhaust Fluid Supply Pump Assembly circuit poor electrical connection

How to Fix the DTC P20B0 Dodge?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

- Faulty Reductant Metering Unit Temperature Sensor
- Reductant Metering Unit Temperature Sensor harness is open or shorted
- Reductant Metering Unit Temperature Sensor circuit poor electrical connection

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P20B0 Dodge code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.