AutoCodes – Generic – P1C5F

P1C5F Code - Oil Viscosity Sensor Circuit Low

Quick Answer

The output from the viscosity sensor to the Powertrain Control Module (PCM) is a pulse width modulated (PWM) signal that is translated by the PCM into a viscosity value. Common causes include Faulty Oil Viscosity Sensor, Oil Viscosity Sensor harness is open or shorted, Oil Viscosity Sensor 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: P1C5F indicates Oil Viscosity Sensor Circuit Low.
Common causes: Common causes include Faulty Oil Viscosity Sensor, Oil Viscosity Sensor harness is open or shorted, Oil Viscosity Sensor 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 10,967

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 16, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1C5F Description

The output from the viscosity sensor to the Powertrain Control Module (PCM) is a pulse width modulated (PWM) signal that is translated by the PCM into a viscosity value. When the oil temperature is between -25°C (-13°F) and -35°C (-31°F) the PCM will use the signal from the viscosity sensor to determine the oil viscosity level. If the PCM determines that the oil viscosity is too low (oil is too thick), the glow plug light on the dash will flash and a text message will appear on the EVIC instructing the operator to wait to start the engine.

OBDII Code P1C5F - Oil Viscosity Sensor Circuit Low - AutoCodes.com — P1C5F Code - Oil Viscosity Sensor Circuit Low

What does this mean?

What are the Possible Causes of the DTC P1C5F?

Faulty Oil Viscosity Sensor
Oil Viscosity Sensor harness is open or shorted
Oil Viscosity Sensor circuit poor electrical connection

How to Fix the DTC P1C5F?

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 P1C5F 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 P1C5F code?

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Need Help with the Code?

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Information for Specific Makes

P1C5F Fiat — Oil Viscosity Sensor Circuit Low

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 P1C5F Code

1. What are the common symptoms of OBDII code P1C5F (Oil Viscosity Sensor Circuit Low)?

Symptoms may include poor engine performance, decreased fuel efficiency, illuminated check engine light, and potential engine stalling.

2. What are the possible causes of OBDII code P1C5F (Oil Viscosity Sensor Circuit Low)?

Potential causes may include a faulty oil viscosity sensor, damaged sensor wiring, low engine oil level, or issues with the engine control module.

3. How can I diagnose the issue related to OBDII code P1C5F (Oil Viscosity Sensor Circuit Low)?

Diagnosis typically involves using a scan tool to read the trouble code, inspecting the oil viscosity sensor and its wiring for damage, checking the engine oil level, and testing the sensor's resistance.

4. Can I continue driving with OBDII code P1C5F (Oil Viscosity Sensor Circuit Low) present?

It is not recommended to drive with this code active, as it can lead to potential engine damage or poor performance. It is advised to address the issue promptly.

5. How can I repair OBDII code P1C5F (Oil Viscosity Sensor Circuit Low)?

Repair options may include replacing the oil viscosity sensor, repairing or replacing damaged wiring, ensuring the engine oil level is correct, or reprogramming the engine control module if necessary.

6. Is OBDII code P1C5F (Oil Viscosity Sensor Circuit Low) a serious issue?

While not an emergency, it is important to address this code to prevent potential engine problems and maintain optimal engine performance.

7. Can a DIY enthusiast fix OBDII code P1C5F (Oil Viscosity Sensor Circuit Low)?

Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to address this code by following repair guides or seeking assistance from online forums.

8. How much does it typically cost to repair OBDII code P1C5F (Oil Viscosity Sensor Circuit Low)?

Costs can vary based on the specific cause of the issue, but generally, repairs for this code can range from $100 to $300, including parts and labor.

9. Will resetting the check engine light resolve OBDII code P1C5F (Oil Viscosity Sensor Circuit Low)?

Resetting the check engine light may temporarily clear the code, but unless the underlying issue is addressed, the code is likely to return.

10. How often does OBDII code P1C5F (Oil Viscosity Sensor Circuit Low) occur in vehicles?

This code is relatively uncommon but can still occur in vehicles equipped with oil viscosity sensors when issues arise with the sensor or its circuit.