P208B Code - Reductant Pump Control Range/Performance
Quick Answer
The reductant pump assembly contains a diaphragm pressure pump, a pressure sensor, a purge valve, an outlet filter and an internal heating element. Common causes include Faulty Reductant Pump, Reductant Pump harness is open or shorted, Reductant Pump 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
- P208B indicates Reductant Pump Control Range/Performance.
- Common causes
- Common causes include Faulty Reductant Pump, Reductant Pump harness is open or shorted, Reductant Pump 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 P208B Description
When the vehicle is shut down, PCM closes injector and actuates reductant purge valve, causing the pump to reverse flow and bleed down pressure on reductant pressure line. The PCM then opens injector to allow gas to enter reductant pressure line, which in turn allows the pump to purge all remaining DEF from the system and return it to reductant tank. The PCM closes injector and returns purge valve to forward position. The PCM commands glow plug control module to provide voltage to reductant pump assembly internal heating element when reductant temperature approaches 12°F (-11°C).
What are the Possible Causes of the DTC P208B?
- Faulty Reductant Pump
- Reductant Pump harness is open or shorted
- Reductant Pump circuit poor electrical connection
How to Fix the DTC P208B?
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 P208B 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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Information for Specific Makes
- P208B Dodge — Diesel Exhaust Fluid Reductant Pump Range/Performance
- P208B Ford — Reductant Pump 'A' Control Range/Performance
- P208B RAM — Diesel Exhaust Fluid Reductant Pump Range/Performance
Frequently Asked Questions about P208B Code
1. What are the common symptoms of OBDII code P208B (Reductant Pump Control Range/Performance)?
- Common symptoms include the illumination of the Check Engine Light (CEL), reduced engine performance, and potential issues with the selective catalytic reduction (SCR) system.
2. What are the possible causes of OBDII code P208B?
- Possible causes of this code can include a faulty reductant pump, wiring or connector issues, a defective reductant pump control module, or a malfunctioning reductant pump pressure sensor.
3. How serious is OBDII code P208B?
- While the severity can vary, it is generally recommended to address this code promptly to prevent potential damage to the SCR system and ensure optimal vehicle performance.
4. Can driving with OBDII code P208B cause further damage to the vehicle?
- Continuing to drive with this code unresolved may lead to decreased fuel efficiency, increased emissions, and potential damage to the SCR system components.
5. How can I diagnose OBDII code P208B?
- Diagnosis typically involves using a scan tool to read the code, examining the reductant pump system for any visible issues, and testing the components involved for proper functionality.
6. Are there any DIY repair tips for OBDII code P208B?
- DIY repair tips may include checking and cleaning electrical connectors, inspecting for any visible damage to wiring, and ensuring the reductant pump and related components are functioning correctly.
7. Is it safe to continue driving with the Check Engine Light on due to code P208B?
- It is generally not recommended to ignore the Check Engine Light associated with this code, as it indicates a potential issue with the reductant pump system that should be addressed promptly.
8. Can a faulty reductant pump control module cause OBDII code P208B?
- Yes, a faulty reductant pump control module is one of the possible causes of OBDII code P208B, and it should be inspected and tested if this code is present.
9. How much does it typically cost to repair OBDII code P208B?
- Repair costs for this code can vary depending on the specific cause of the issue, but it is advisable to consult with a mechanic for a proper diagnosis and cost estimate.
10. Can OBDII code P208B be cleared/reset without repairs?
- While the code can be cleared/reset, it is important to address the underlying issue causing the code to prevent it from reoccurring and potentially causing further problems.
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