AutoCodes – Dodge – P1051 Dodge

P1051 Dodge Code - Reductant Heater 1 Driver High Temperature

Quick Answer

As reductant will freeze at temperatures below -11°C (12°F), there are 2 reductant heaters. Common causes include Faulty Reductant Line Heater, Reductant Line Heater harness is open or shorted, Reductant Line Heater 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: P1051 Dodge indicates Reductant Heater 1 Driver High Temperature.
Common causes: Common causes include Faulty Reductant Line Heater, Reductant Line Heater harness is open or shorted, Reductant Line Heater 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 4,762

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 24, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1051 Dodge Description

As reductant will freeze at temperatures below -11°C (12°F), there are 2 reductant heaters. Reductant heater 1 is integral to the Emission Reduction Fluid Supply Pump Module, located in the reductant tank. Reductant heater 2 is located in the supply line to the reductant injector. The Engine Control Module (ECM) monitors the reductant temperature in the tank in order to determine if the fluid is below its freeze point. If the ECM determines that the reductant may be frozen, it activates a "defrost strategy", by energizing the reductant heaters. The heaters are deactivated when the fluid temperature exceeds a calibrated value. The Diagnostic Trouble Code (DTC) will be set when the ECM indicates the reductant tank heater temperature is over the calibrated threshold for greater than 5 s.

OBDII Code P1051 Dodge - Reductant Heater 1 Driver High Temperature - AutoCodes.com — P1051 Dodge Code - Reductant Heater 1 Driver High Temperature

What does this mean?

What are the Possible Causes of the DTC P1051 Dodge?

Faulty Reductant Line Heater
Reductant Line Heater harness is open or shorted
Reductant Line Heater circuit poor electrical connection
Faulty Reductant Pump and Sensor Assembly
Faulty Reductant Control Module

How to Fix the DTC P1051 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 P1051 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.

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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 P1051 Dodge Code

1. What are common symptoms of OBDII code P1051 in a Dodge related to the Reductant Heater 1 Driver High Temperature?

The common symptoms include the check engine light illuminating on the dashboard, reduced engine performance, and potential issues with the vehicle's emissions system.

2. What are the possible causes of OBDII code P1051 in a Dodge?

Possible causes include a faulty reductant heater 1 driver, damaged wiring or connectors in the reductant heater circuit, or issues with the Powertrain Control Module (PCM).

3. How can I diagnose OBDII code P1051 in my Dodge?

Diagnosing this code typically involves using a diagnostic scanner to retrieve the specific fault code and then conducting a thorough inspection of the reductant heater system, including checking the heater driver, wiring, and connections.

4. Can I still drive my Dodge with OBDII code P1051 present?

It is generally not recommended to continue driving the vehicle with this code present, as it can lead to further damage to the emissions system and potentially affect the vehicle's performance.

5. How can I repair OBDII code P1051 in my Dodge?

Repairing this code often involves replacing the faulty reductant heater 1 driver, repairing any damaged wiring or connectors, and clearing the fault code from the PCM using a diagnostic scanner.

6. Are there any DIY tips for fixing OBDII code P1051 in a Dodge?

While some basic troubleshooting steps can be taken, such as checking for loose connections or damaged wiring, it is recommended to have a professional mechanic diagnose and repair this code to ensure it is fixed correctly.

7. Is OBDII code P1051 related to emissions compliance in my Dodge?

Yes, this code is related to the reductant heater system, which is part of the emissions control system in your Dodge vehicle.

8. How much does it typically cost to repair OBDII code P1051 in a Dodge?

The cost of repairing this code can vary depending on the specific issue causing it, but it may range from a few hundred to over a thousand dollars, including parts and labor.

9. Can OBDII code P1051 cause any long-term damage to my Dodge if left unrepaired?

If left unrepaired, this code can potentially cause damage to the emissions system and lead to more serious issues with the vehicle's overall performance and drivability.

10. Is it necessary to reset the PCM after repairing OBDII code P1051 in a Dodge?

Yes, it is important to reset the PCM after repairing this code to clear the fault code and ensure proper operation of the reductant heater system in your Dodge.