AutoCodes – Ford – P208D Ford

P208D Ford Code - Reductant Pump Control Circuit High

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: P208D Ford indicates Reductant Pump Control Circuit High.
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.

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Code Popularity 4,373

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jul 26, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P208D Ford Description

The reductant pump assembly contains a diaphragm pressure pump, a pressure sensor, a purge valve, an outlet filter and an internal heating element. The reductant pressure sensor provides feedback to Powertrain Control Module (PCM), which regulates system pressure by controlling pump speed using pulse width modulation. When PCM requests reductant injection, the reductant injector opens and the pump operates, filling reductant pressure line and injector and purging air from the system. When all air is purged, injector closes and pump builds pressure to 73 psi. (500 kPa). The system is then primed and injector provides DEF to the SCR catalyst as determined by PCM.
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).

OBDII Code P208D Ford - Reductant Pump Control Circuit High - AutoCodes.com — P208D Ford Code - Reductant Pump Control Circuit High

What does this mean?

What are the Possible Causes of the DTC P208D Ford?

Faulty Reductant Pump
Reductant Pump harness is open or shorted
Reductant Pump circuit poor electrical connection

How to Fix the DTC P208D Ford?

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 P208D Ford 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.