AutoCodes – Ford – P2051 Ford

P2051 Ford Code - Reductant Injection Valve Circuit Low Bank 2 Unit 1

Quick Answer

The Reductant Dosing Valve (Reductant Injection Valve) is used to meter and atomize the reductant liquid before it is mixed with the exhaust gas. Common causes include Faulty Reductant Injection Valve, Reductant Injection Valve harness is open or shorted, Reductant Injection Valve 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: P2051 Ford indicates Reductant Injection Valve Circuit Low Bank 2 Unit 1.
Common causes: Common causes include Faulty Reductant Injection Valve, Reductant Injection Valve harness is open or shorted, Reductant Injection Valve 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 2,628

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2051 Ford Description

The Reductant Dosing Valve (Reductant Injection Valve) is used to meter and atomize the reductant liquid before it is mixed with the exhaust gas. Normal operating frequency is between 3 Hz and .3 Hz. The cooling body contains heat sink fins to keep the injector and reductant below the boiling point. If the sensed temperature is nearing the maximum temperature threshold, reductant spray will be increased in quantity to actively cool the valve.

OBDII Code P2051 Ford - Reductant Injection Valve Circuit Low Bank 2 Unit 1 - AutoCodes.com — P2051 Ford Code - Reductant Injection Valve Circuit Low Bank 2 Unit 1

What does this mean?

What are the Possible Causes of the DTC P2051 Ford?

Faulty Reductant Injection Valve
Reductant Injection Valve harness is open or shorted
Reductant Injection Valve circuit poor electrical connection

How to Fix the DTC P2051 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 P2051 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.

Need more information about the P2051 Ford code?

Need more information on how to fix the P2051 Ford code? Get Access to Factory Service Manuals

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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.

Frequently Asked Questions about P2051 Ford Code

1. What are common symptoms of OBDII code P2051 in a Ford vehicle?

- Common symptoms include poor engine performance, reduced fuel efficiency, and the illumination of the Check Engine Light.

2. What does the OBDII code P2051 Ford indicate?

- The code P2051 indicates a low circuit voltage in the reductant injection valve for Bank 2 Unit 1 in the vehicle's emissions system.

3. What are possible causes of the P2051 code in a Ford vehicle?

- Possible causes include a faulty reductant injection valve, damaged wiring or connectors in the circuit, a failed reductant control module, or a malfunctioning powertrain control module (PCM).

4. How can I diagnose the P2051 code in my Ford vehicle?

- Diagnosis typically involves checking the wiring and connectors in the reductant injection valve circuit, testing the valve itself for proper operation, and using a scan tool to monitor data related to the reductant system.

5. What is the repair process for OBDII code P2051 in a Ford vehicle?

- The repair process may involve replacing the faulty reductant injection valve, repairing or replacing damaged wiring or connectors, or replacing the reductant control module or PCM if necessary.

6. Can I drive my Ford vehicle with the P2051 code present?

- It is not recommended to drive the vehicle with the P2051 code present, as it can lead to reduced performance and potential damage to the emissions system.

7. How serious is the P2051 OBDII code in a Ford vehicle?

- While the code may not cause immediate harm to the vehicle, it can lead to increased emissions and reduced fuel efficiency if left unresolved.

8. Can I reset the Check Engine Light after fixing the P2051 code in my Ford?

- Yes, after fixing the underlying issue causing the P2051 code, you can reset the Check Engine Light using a scan tool or by disconnecting the vehicle's battery for a few minutes.

9. Are there any preventative measures to avoid OBDII code P2051 in a Ford vehicle?

- Keeping up with regular maintenance, such as checking and replacing the reductant injection valve as needed, can help prevent the occurrence of the P2051 code.

10. How much does it typically cost to repair the P2051 code in a Ford vehicle?

- The cost of repairing the P2051 code can vary depending on the specific cause of the issue, but it may range from $100 to $500 or more, including parts and labor.