P20B2 RAM Code - Diesel Exhaust Fluid Reductant Heater Control Valve Performance
Quick Answer
The Diesel Exhaust Fluid (DEF) Tank Level Sensor and Diesel Exhaust Fluid (DEF) Tank Temperature Sensor are a combination sensor used to measure the level and temperature of the fluid in the DEF Tank. Common causes include Faulty Diesel Exhaust Fluid Reductant Heater Control Valve, Diesel Exhaust Fluid Reductant Heater Control Valve harness is open or shorted, Diesel Exhaust Fluid Reductant Heater Control Valve 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
- P20B2 RAM indicates Diesel Exhaust Fluid Reductant Heater Control Valve Performance.
- Common causes
- Common causes include Faulty Diesel Exhaust Fluid Reductant Heater Control Valve, Diesel Exhaust Fluid Reductant Heater Control Valve harness is open or shorted, Diesel Exhaust Fluid Reductant Heater Control Valve 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.
Code P20B2 RAM Description
What are the Possible Causes of the DTC P20B2 RAM?
- Faulty Diesel Exhaust Fluid Reductant Heater Control Valve
- Diesel Exhaust Fluid Reductant Heater Control Valve harness is open or shorted
- Diesel Exhaust Fluid Reductant Heater Control Valve circuit poor electrical connection
How to Fix the DTC P20B2 RAM?
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 is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P20B2 RAM 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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Frequently Asked Questions about P20B2 RAM Code
What does the OBDII code P20B2 mean?
The code P20B2 indicates an issue with the Diesel Exhaust Fluid (DEF) reductant heater control valve's performance, which is part of the emissions system in vehicles equipped with diesel engines.
What are the common symptoms of the P20B2 code?
Symptoms may include an illuminated check engine light, reduced engine performance, or warnings related to the emissions system, such as DEF system failure messages.
What causes the P20B2 code to appear?
Common causes include a malfunctioning reductant heater control valve, damaged wiring or connectors in the DEF system, or issues with the DEF heater assembly.
Can the P20B2 code affect the vehicle’s performance?
Yes, if the DEF system isn't functioning properly, it can lead to reduced engine performance, limp mode, or failure to meet emissions standards.
How is the P20B2 code diagnosed?
Mechanics use an OBDII scanner to retrieve the code, inspect the DEF system components, check for wiring or connector damage, and test the functionality of the reductant heater control valve.
Can I drive my vehicle with the P20B2 code?
Driving is possible but not recommended, as prolonged operation with this code can lead to reduced performance, emissions system failure, or potential legal issues due to exceeding emissions limits.
How do you fix the P20B2 code?
Repairs may involve replacing the reductant heater control valve, repairing or replacing damaged wiring, or addressing issues with the DEF heater assembly.
Is the P20B2 code covered under warranty?
Coverage depends on your vehicle's warranty terms and whether the DEF system components are included under emissions-related warranties.
How much does it cost to repair the P20B2 code?
Repair costs vary but typically range from $300 to $800, depending on parts and labor, with the reductant heater being the most common replacement.
Can regular maintenance prevent the P20B2 code?
Yes, maintaining the DEF system and inspecting wiring and connectors for damage can help prevent issues related to this code.
Discuss the causes and fixes for P20B2 RAM OBDII Code
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