AutoCodes – Dodge – P208D Dodge

P208D Dodge Code - Diesel Exhaust Fluid Reductant Pump Control Circuit Low

Quick Answer

The Diesel Exhaust Fluid (DEF) Supply Pump Assembly has many functions. Common causes include Faulty Diesel Exhaust Fluid (DEF) Supply Pump Assembly, DEF Supply Pump Assembly harness is open or shorted, DEF 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: P208D Dodge indicates Diesel Exhaust Fluid Reductant Pump Control Circuit Low.
Common causes: Common causes include Faulty Diesel Exhaust Fluid (DEF) Supply Pump Assembly, DEF Supply Pump Assembly harness is open or shorted, DEF 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 231

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 Oct 27, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P208D Dodge Description

The Diesel Exhaust Fluid (DEF) Supply Pump Assembly has many functions. Its primary purpose is to build adequate system pressure for dosing into the exhaust. When the system is shut down the pump is used to purge the fluid out of the line and back into the tank. The DEF Dosing Control Unit provides the 12-volt supply and ground for the pump. The DEF Dosing Control Unit also provides a Pulse Width Modulated (PWM) signal to the DEF Supply Pump Assembly to control the speed and output of the pump. The DEF Dosing Control Unit will illuminate the MIL light via the Powertrain Control Module (PCM) immediately after the diagnostics runs and fails and diesel exhaust fluid injection into the after-treatment system is disabled. The DEF Dosing Control Unit will turn off the MIL light via the PCM when the monitor runs and passes in three consecutive key cycles. Note: The DEF Dosing Control Unit is located on the DEF Tank.
The first warning will occur when the p-code becomes pending or active. The customer will hear a chime and get an EVIC message reading "Service DEF System See Dealer." The second warning level will occur if the customer continues to drive, and the code has not cleared. The customer will hear a chime and get an EVIC message reading "Speed Limited to 5 mph in XXX MILES See Dealer". Upon driving until the countdown reaches zero, the customer will hear a chime and get an EVIC message reading "5 mph Max on Restart, Long Idle or Refuel See Dealer." Upon key-off, refuel, or 1 hour long idle, the EVIC message will read, "Speed Limited to 5 mph See Dealer." Once induced to a 5 mph derate, the inducement will not clear unless the diagnostic runs and passes, or the PCM is recalibrated.

OBDII Code P208D Dodge - Diesel Exhaust Fluid Reductant Pump Control Circuit Low - AutoCodes.com — P208D Dodge Code - Diesel Exhaust Fluid Reductant Pump Control Circuit Low

What does this mean?

What are the Possible Causes of the DTC P208D Dodge?

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

How to Fix the DTC P208D 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P208D 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.

Need more information about the P208D Dodge code?

Need more information on how to fix the P208D Dodge code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P208D Dodge code diagnosed by a professional: Find a repair shop in your area

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.

Frequently Asked Questions about P208D Dodge Code

What does the OBDII code P208D mean for a Dodge vehicle?

P208D indicates a low voltage condition in the Diesel Exhaust Fluid (DEF) Reductant Pump Control Circuit, which is responsible for managing the DEF system used to reduce nitrogen oxide emissions.

What are the common symptoms of the P208D code?

Symptoms may include the check engine light being illuminated, reduced engine performance, increased exhaust emissions, and DEF system malfunction warnings.

What causes the P208D code to appear?

Common causes include damaged wiring or connectors in the reductant pump control circuit, a failing DEF pump, low DEF fluid levels, or issues with the vehicle's powertrain control module (PCM).

Can driving with the P208D code damage my vehicle?

Driving with this code may lead to increased emissions and potential damage to the DEF system. In some cases, the vehicle may enter limp mode to prevent further issues.

How can I diagnose the P208D code?

Start by inspecting the wiring and connectors associated with the reductant pump. Use a multimeter to check for voltage and continuity in the control circuit. If necessary, test the DEF pump and PCM functionality.

Is the P208D code specific to Dodge diesel vehicles?

While P208D is common in Dodge diesel models, it can also appear in other vehicles equipped with DEF systems. Always refer to the vehicle-specific repair manual for accurate diagnosis.

How do I fix the P208D code?

Repair steps may include replacing damaged wiring or connectors, replacing the DEF pump, refilling DEF fluid, or reprogramming/updating the PCM if necessary.

Can low DEF fluid levels trigger the P208D code?

Yes, insufficient DEF levels can sometimes cause issues with the reductant pump and result in this code being stored.

What tools do I need to repair the P208D code?

You may need an OBDII scanner, multimeter, wiring repair tools, and potentially specialty tools for accessing the DEF pump or related components.

How much does it cost to fix a P208D code on a Dodge vehicle?

Repair costs vary depending on the issue. Wiring repairs may cost $50-$200, while DEF pump replacement can cost $500-$1,000, including parts and labor.