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Engine-Codes – Generic – P208C

P208C Code - Reductant Pump Control Circuit Low

Quick Answer

The diagnostic trouble code P208C refers to the Reductant Pump Control Circuit Low. Common causes include Faulty Reductant Pump: A malfunctioning reductant pump can trigger the P208C code, Wiring Issues: Damage or corrosion in the wiring harness connected to the reductant pump control circuit can cause a low voltage condition, Defective Control Module: A faulty control module responsible for monitoring and controlling the reductant pump circuit can also be a cause. 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
P208C indicates Reductant Pump Control Circuit Low.
Common causes
Common causes include Faulty Reductant Pump: A malfunctioning reductant pump can trigger the P208C code, Wiring Issues: Damage or corrosion in the wiring harness connected to the reductant pump control circuit can cause a low voltage condition, Defective Control Module: A faulty control module responsible for monitoring and controlling the reductant pump circuit can also be a cause.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code P208C Description

The diagnostic trouble code P208C refers to the Reductant Pump Control Circuit Low. This code indicates that the control module has detected a lower than expected voltage in the circuit that controls the reductant pump. The reductant pump is a crucial component in the vehicle's emissions control system, specifically in vehicles equipped with selective catalytic reduction (SCR) systems. The reductant pump is responsible for supplying the necessary urea solution (diesel exhaust fluid) to the SCR system to reduce harmful emissions.

OBDII Code P208C - Reductant Pump Control Circuit Low
P208C Code - Reductant Pump Control Circuit Low

Common Causes of P208C

  1. Faulty Reductant Pump: A malfunctioning reductant pump can trigger the P208C code.
  2. Wiring Issues: Damage or corrosion in the wiring harness connected to the reductant pump control circuit can cause a low voltage condition.
  3. Defective Control Module: A faulty control module responsible for monitoring and controlling the reductant pump circuit can also be a cause.
  4. Poor Electrical Connections: Loose or poor electrical connections in the circuit can lead to low voltage readings.

Symptoms of P208C

  1. Check Engine Light: The most common symptom associated with the P208C code is the illumination of the check engine light on the vehicle's dashboard.
  2. Reduced Power: The vehicle may experience a decrease in power and performance, especially during acceleration.
  3. Increased Emissions: Higher emissions output may be detected during emissions testing.
  4. Poor Fuel Economy: The vehicle may exhibit decreased fuel efficiency due to improper emissions control.

How to Fix P208C

  1. Diagnose the Issue: Use a diagnostic scanner to retrieve the trouble codes and perform a thorough inspection of the reductant pump control circuit.
  2. Inspect Wiring and Connections: Check the wiring harness for any damage or corrosion. Ensure all electrical connections are secure and free of debris.
  3. Test the Reductant Pump: Verify the functionality of the reductant pump by testing its operation and power supply.
  4. Replace Faulty Components: Replace any damaged wiring, connectors, or the reductant pump itself if necessary.
  5. Clear Codes and Test Drive: After the repairs are completed, clear the trouble codes from the vehicle's memory and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P208C

The typical repair costs for addressing the P208C code can vary depending on the specific cause of the issue and the vehicle's make and model. On average, the cost for parts and labor to repair the reductant pump control circuit low code can range from $200 to $600. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's recommended to obtain quotes from local shops for a more accurate estimate. Additionally, the cost may be higher if the reductant pump itself needs to be replaced.

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Code P208C Information for Specific Makes

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 P208C Code

1. What are the common symptoms of OBDII code P208C (Reductant Pump Control Circuit Low)?

The common symptoms of P208C may include poor engine performance, reduced fuel efficiency, and the illumination of the check engine light.

2. What are the possible causes of OBDII code P208C?

Possible causes of P208C include a faulty reductant pump, damaged wiring or connectors in the control circuit, or issues with the powertrain control module.

3. How can I diagnose the cause of OBDII code P208C?

Diagnosing P208C involves using a scan tool to retrieve the code, checking the reductant pump and its circuit for any visible damage, and testing the pump's electrical connections.

4. Can a DIYer repair OBDII code P208C?

DIY repairs for P208C may be possible if you have the necessary tools and expertise. However, it is recommended to consult a professional mechanic for accurate diagnosis and repair.

5. Are there any simple repair tips for fixing OBDII code P208C?

Simple repair tips for P208C include checking and replacing any damaged wiring or connectors in the reductant pump control circuit and ensuring the pump is functioning properly.

6. Is it safe to continue driving with OBDII code P208C active?

It is not recommended to drive with P208C active, as it can lead to further damage to the reductant system and affect the vehicle's overall performance.

7. How much does it typically cost to repair OBDII code P208C?

The cost of repairing P208C can vary depending on the specific cause of the issue, but it may involve replacing the reductant pump, repairing wiring, or addressing issues with the powertrain control module.

8. Can a faulty reductant pump cause OBDII code P208C?

Yes, a faulty reductant pump can trigger P208C if it is not functioning properly or has failed altogether.

9. What is the role of the reductant pump in the vehicle's emissions system?

The reductant pump is responsible for supplying the necessary fluid to the emissions system to help reduce harmful emissions from the vehicle's exhaust.

10. How can I prevent OBDII code P208C from recurring in the future?

Regular maintenance of the reductant system, including checking for leaks, proper fluid levels, and keeping the system clean, can help prevent the recurrence of P208C in the future.

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