P20B7 RAM Code - Diesel Exhaust Fluid Reductant Pump Heater Control Circuit Low
Quick Answer
The P20B7 diagnostic trouble code (DTC) indicates a problem with the Diesel Exhaust Fluid (DEF) reductant pump heater control circuit being lower than the expected range. Common causes include Faulty DEF reductant pump heater, Wiring issues in the heater control circuit, Defective temperature sensor. 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
- P20B7 RAM indicates Diesel Exhaust Fluid Reductant Pump Heater Control Circuit Low.
- Common causes
- Common causes include Faulty DEF reductant pump heater, Wiring issues in the heater control circuit, Defective temperature sensor.
- 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 P20B7 RAM Description
The P20B7 diagnostic trouble code (DTC) indicates a problem with the Diesel Exhaust Fluid (DEF) reductant pump heater control circuit being lower than the expected range. The DEF reductant pump is responsible for injecting DEF into the exhaust system to reduce harmful emissions. The heater control circuit is crucial for maintaining the proper temperature of the DEF reductant pump to ensure optimal performance.
Common Causes of P20B7 RAM
- Faulty DEF reductant pump heater
- Wiring issues in the heater control circuit
- Defective temperature sensor
- Corrosion or damage to electrical connections
- Software issues with the engine control module
Symptoms of P20B7 RAM
- Check engine light illuminated
- Reduced engine power
- Difficulty starting the vehicle
- Poor fuel efficiency
- Smoky exhaust emissions
How to Fix P20B7 RAM
- Perform a visual inspection of the DEF reductant pump heater and wiring for any obvious signs of damage.
- Test the temperature sensor to ensure it is functioning correctly.
- Check and clean any corroded or damaged electrical connections.
- Replace the DEF reductant pump heater if it is found to be faulty.
- Clear the DTC and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P20B7 RAM
The typical repair cost for addressing a P20B7 DTC can range from $200 to $600, depending on the specific cause of the issue and any necessary parts replacement. This estimate includes parts and labor, but actual costs can vary based on the location of the repair shop, the vehicle's make and model, and the type of engine. It's advisable to consult with a professional mechanic for a more accurate cost estimate tailored to your specific situation.
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Frequently Asked Questions about P20B7 RAM Code
1. What are the common symptoms of OBDII code P20B7 RAM?
The common symptoms of code P20B7 include the check engine light illuminating, reduced engine performance, and potential issues with the diesel exhaust fluid system.
2. What does the OBDII code P20B7 RAM indicate?
Code P20B7 indicates a low voltage condition in the control circuit of the diesel exhaust fluid reductant pump heater.
3. What are the possible causes of OBDII code P20B7 RAM?
Possible causes of code P20B7 include a faulty reductant pump heater, damaged wiring or connectors in the control circuit, a blown fuse, or a malfunctioning powertrain control module (PCM).
4. How can I diagnose OBDII code P20B7 RAM?
Diagnosing code P20B7 typically involves using a scan tool to retrieve the code and then testing the reductant pump heater, inspecting wiring and connectors for damage, checking fuses, and verifying the PCM operation.
5. Can I drive my vehicle with OBDII code P20B7 RAM?
It is not recommended to drive your vehicle with code P20B7 present, as it can lead to reduced engine performance and potential damage to the diesel exhaust fluid system.
6. How can I repair OBDII code P20B7 RAM?
Repairing code P20B7 may involve replacing the reductant pump heater, repairing damaged wiring or connectors, replacing blown fuses, or reprogramming the PCM if necessary.
7. Is OBDII code P20B7 RAM a serious issue?
Code P20B7 should be addressed promptly to prevent further damage to the diesel exhaust fluid system and ensure proper vehicle performance.
8. Can a DIY enthusiast fix OBDII code P20B7 RAM?
Depending on your skill level and access to tools, some DIY enthusiasts may be able to diagnose and repair code P20B7, especially if the issue is related to wiring or fuse problems.
9. How much does it cost to repair OBDII code P20B7 RAM?
The cost of repairing code P20B7 can vary depending on the exact cause of the issue, but it may involve parts and labor costs ranging from $200 to $800 or more, depending on the extent of the repairs needed.
10. How often does OBDII code P20B7 RAM occur in vehicles?
Code P20B7 RAM is not extremely common but can occur in vehicles equipped with a diesel exhaust fluid system and reductant pump heater.
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