AutoCodes – Dodge – P1C54 Dodge

P1C54 Dodge Code - SCR NOx Catalyst Missing

Quick Answer

The aftertreatment system is equipped with two Nox Sensors and modules. Common causes include Degraded, Diluted, or Incorrect Diesel Exhaust Fluid, Diesel Exhaust Fluid Deposit in the decomposition tube, Exhaust leaks. 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: P1C54 Dodge indicates SCR NOx Catalyst Missing.
Common causes: Common causes include Degraded, Diluted, or Incorrect Diesel Exhaust Fluid, Diesel Exhaust Fluid Deposit in the decomposition tube, Exhaust leaks.
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 14,791

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 Mar 15, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1C54 Dodge Description

The aftertreatment system is equipped with two Nox Sensors and modules. The upstream NOx Sensor 1/1 is located on the Turbocharger elbow downpipe and is permanently connected to a corresponding Nox Sensor Module mounted to the hot side of the engine block. The downstream NOx Sensor 1/2 is located at the outlet of the SCR Catalyst and is permanently connected to a corresponding Nox Sensor Module which is mounted on the right frame rail. The NOx Sensors and NOx Sensor Modules are calibrated to each other and must be replaced as an assembly. The two NOx Sensor and Module asemblies are not interchangeable. The NOx Sensor Modules are smart devices and communicate with the Powertrain Control Module (PCM) over the J1939 Data Link. The NOx Sensor Modules perform their own internal diagnostics and report malfunctions back to the PCM. The NOx Sensors are used to monitor the efficiency of the SCR Catalyst and dosing system. The PCM will illuminate the MIL lamp immediately after the monitor runs and fails. The PCM will turn off the MIL Lamp immediately after the monitor runs and passes.

OBDII Code P1C54 Dodge - SCR NOx Catalyst Missing - AutoCodes.com — P1C54 Dodge Code - SCR NOx Catalyst Missing

What does this mean?

What are the Possible Causes of the DTC P1C54 Dodge?

Degraded, Diluted, or Incorrect Diesel Exhaust Fluid
Diesel Exhaust Fluid Deposit in the decomposition tube
Exhaust leaks
Malfunctioning Diesel Exhaust Fluid Dosing System
Malfunction SCR Catalyst

How to Fix the DTC P1C54 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 P1C54 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 P1C54 Dodge Code

1. What are the common symptoms of OBDII code P1C54 (SCR NOx Catalyst Missing)?

The common symptoms of this code may include the illumination of the Check Engine Light, reduced engine performance, and potential failure to pass emissions testing.

2. What are the possible causes of OBDII code P1C54 (SCR NOx Catalyst Missing)?

Potential causes of this code include a faulty Selective Catalytic Reduction (SCR) catalyst, damaged NOx sensors, wiring issues, or a malfunctioning control module.

3. How serious is OBDII code P1C54 (SCR NOx Catalyst Missing)?

Ignoring this code can lead to increased emissions, potential damage to the catalytic converter, and a decline in fuel efficiency. It is recommended to address this issue promptly.

4. Can I continue driving my vehicle with OBDII code P1C54 (SCR NOx Catalyst Missing)?

It is not advisable to continue driving the vehicle with this code present, as it can lead to further damage and potential environmental impact. It is best to address the underlying issue as soon as possible.

5. How can I diagnose OBDII code P1C54 (SCR NOx Catalyst Missing)?

Diagnosing this code typically involves using a scan tool to retrieve the code, inspecting the SCR system components, checking wiring connections, and testing the NOx sensors for proper functionality.

6. What are some repair tips for OBDII code P1C54 (SCR NOx Catalyst Missing)?

Repair tips may include replacing the faulty SCR catalyst, repairing any damaged wiring, testing and replacing malfunctioning sensors, and resetting the fault code after the repairs are completed.

7. Can a DIY enthusiast fix OBDII code P1C54 (SCR NOx Catalyst Missing)?

While some aspects of diagnosing and repairing this code may be tackled by a knowledgeable DIY enthusiast, it is recommended to consult a professional mechanic for a proper diagnosis and repair to ensure the issue is resolved correctly.

8. How much does it cost to repair OBDII code P1C54 (SCR NOx Catalyst Missing)?

The cost of repairing this code can vary depending on the underlying issue, parts needed for replacement, labor costs, and the mechanic's hourly rate. It is best to obtain quotes from local repair shops for a more accurate estimate.

9. Can resetting the fault code temporarily fix OBDII code P1C54 (SCR NOx Catalyst Missing)?

Resetting the fault code may temporarily turn off the Check Engine Light, but if the underlying issue is not addressed, the code is likely to reappear. It is crucial to diagnose and repair the root cause of the problem.

10. How can I prevent OBDII code P1C54 (SCR NOx Catalyst Missing) from reoccurring?

To prevent this code from reoccurring, it is essential to perform regular vehicle maintenance, address any issues promptly, use high-quality DEF (Diesel Exhaust Fluid), and drive the vehicle responsibly to maintain proper SCR system function.