AutoCodes – Generic – P103F

P103F Code - Reductant Pump Driver High Temperature

Quick Answer

The selective catalytic reduction system reduces Oxides of Nitrogen (NOx) emissions by injecting a metered amount of reductant into the exhaust gas stream entering the selective catalytic reduction catalyst. Common causes include Faulty Reductant Pump and Sensor Assembly, Reductant Pump and Sensor Assembly harness is open or shorted, Reductant Pump and Sensor 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
P103F indicates Reductant Pump Driver High Temperature.
Common causes
Common causes include Faulty Reductant Pump and Sensor Assembly, Reductant Pump and Sensor Assembly harness is open or shorted, Reductant Pump and Sensor 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.
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Code Popularity 2,238
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 24, 2021
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Code P103F Description

The selective catalytic reduction system reduces Oxides of Nitrogen (NOx) emissions by injecting a metered amount of reductant into the exhaust gas stream entering the selective catalytic reduction catalyst. Within the selective catalytic reduction catalyst, the reductant reacts with the NOx to form nitrogen, carbon dioxide, and water vapor. Upstream and downstream NOx sensors provide the engine control module and the reductant control module via serial data. The Engine Control Module (ECM) controls the reductant injector duty cycle in response to changes in engine-out NOx levels. The reductant control module supplies system voltage to the reductant pump motor. The reductant control module controls the solenoid by grounding the control circuit. The reductant control module can determine if the control circuit is open, shorted to ground, or shorted to a voltage by monitoring the feedback voltage. The Diagnostic Trouble Code (DTC) will be set when the reductant control module detects a motor pump driver high temperature.
OBDII Code P103F - Reductant Pump Driver High Temperature - AutoCodes.com
P103F Code - Reductant Pump Driver High Temperature

What are the Possible Causes of the DTC P103F?

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

How to Fix the DTC P103F?

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 P103F 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 P103F code?

Need more information on how to fix the P103F code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P103F code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

  • P103F Buick β€” Reductant Pump Driver High Temperature
  • P103F Cadillac β€” Reductant Pump Driver High Temperature
  • P103F Chevrolet β€” Reductant Pump Driver High Temperature
  • P103F Chrysler β€” Cylinder 4 Oil Supply Solenoid Valve Driver Short To Battery
  • P103F Dodge β€” Cylinder 4 Oil Supply Solenoid Valve Driver Short To Battery
  • P103F Fiat β€” Cylinder 4 Oil Supply Solenoid Valve Driver Short To Battery
  • P103F GMC β€” Reductant Pump Driver High Temperature
  • P103F Jeep β€” Cylinder 4 Oil Supply Solenoid Valve Driver Short To Battery
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 P103F Code

1. What are the common symptoms of OBDII code P103F (Reductant Pump Driver High Temperature)?

- The common symptoms include the illumination of the Check Engine Light, reduced engine performance, and potential exhaust system issues.

2. What are the possible causes of OBDII code P103F?

- Possible causes of this code may include a faulty reductant pump driver module, wiring issues, high exhaust temperatures, or a malfunctioning reductant pump.

3. How can I diagnose OBDII code P103F?

- Diagnosis typically involves using an OBDII scanner to retrieve the code, conducting a visual inspection of related components, and testing the reductant pump driver module and wiring for faults.

4. Can I continue driving my vehicle with OBDII code P103F active?

- It is not recommended to drive the vehicle with this code active, as it can lead to more severe issues and potential damage to the exhaust system.

5. What is the repair process for OBDII code P103F?

- The repair process may involve replacing the reductant pump driver module, repairing or replacing damaged wiring, and addressing any underlying issues contributing to the high temperature condition.

6. How much does it typically cost to repair OBDII code P103F?

- The cost of repair can vary depending on the extent of the damage and the specific components that need to be replaced. It's recommended to obtain quotes from reputable mechanics for an accurate estimate.

7. Are there any preventative measures to avoid OBDII code P103F in the future?

- Regular maintenance, such as checking and replacing worn components, monitoring exhaust system temperatures, and addressing any warning signs promptly, can help prevent the recurrence of this code.

8. Can OBDII code P103F be triggered by other underlying issues in the vehicle?

- Yes, this code can sometimes be triggered by other issues such as exhaust leaks, sensor malfunctions, or fuel system problems. A thorough diagnostic process is necessary to pinpoint the exact cause.

9. Is it safe to clear the OBDII code P103F without addressing the underlying issue?

- Clearing the code without addressing the underlying issue may temporarily turn off the Check Engine Light, but the problem will likely reoccur. It's essential to diagnose and repair the root cause of the code.

10. How long does it typically take to repair OBDII code P103F?

- The repair time for this code can vary depending on the complexity of the issue and the availability of parts. It's advisable to consult with a professional mechanic for a more accurate time estimate.

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