P1015 - Reductant Control Module Sensor Serial Communication Circuit Low Voltage
OBD2 Error Codes

P1015 - Reductant Control Module Sensor Serial Communication Circuit Low Voltage

23.11.2023 /

P1015 – OBD-II Trouble Code Technical Description

Reductant Control Module Sensor Serial Communication Circuit Low Voltage

What does the fault code mean P1015?

The reducing agent quality sensor is designed to measure the quality of the reducing agent in the tank using an ultrasonic signal. It also includes a built-in temperature sensor to monitor the temperature of the reducing agent. This sensor communicates with the reducing agent control module via serial data.

If the remanufacturer control module detects a signal circuit malfunction resulting in a low signal for more than 1 second, a diagnostic trouble code (DTC) will be set. This code serves as an indicator of possible problems with the operation of the sensor or associated elements, which allows for more detailed diagnostics and repairs if necessary.

Possible reasons

Possible causes of a malfunction leading to DTC P1015 include:

  1. Faulty reducing agent control module:
    • Faults in the reducer control module itself can lead to incorrect data processing and the appearance of a fault code.
  2. Reductant control module wiring harness is open or shorted:
    • Damage or breaks in the wiring between the reductant control module and the sensor can cause an incorrect data reading and a P1015 code.
  3. Reductant Control Module Circuit Poor Electrical Connection:
    • Problems with the electrical connection in the circuit between the reductant control module and the sensor can cause poor communication efficiency and set a DTC.
  4. Faulty reducing agent quality sensor:
    • The sensor itself, which is responsible for measuring the quality of the reducing agent, may be damaged or faulty, which will lead to incorrect data and the appearance of a diagnostic code.

These reasons can serve as a starting point for diagnosis, but it is important to note that there may also be other factors that influence the appearance of the P1015 code. It is recommended to conduct more detailed diagnostics using professional equipment to accurately identify and eliminate the problem.

What are the symptoms of a fault code? P1015?

Symptoms associated with DTC P1015 may vary depending on the specific features and make of the vehicle. However, common symptoms may include:

  1. Check Engine Indicator:
    • The Check Engine light on the dashboard turns on, indicating a problem with the engine management system.
  2. Lost performance:
    • Deterioration in overall engine performance, which may manifest itself as loss of power, rough running, or other engine abnormalities.
  3. Unstable engine operation:
    • Unstable engine operation, possibly with occasional shaking or shaking while driving or idling.
  4. Loss of fuel efficiency:
    • Increased fuel consumption due to inefficient operation of the engine management system.
  5. Operating mode limitation:
    • In some cases, the control system may enter a limited operation mode to prevent possible damage.

It's important to note that symptoms may vary depending on the specific problem causing the P1015 code. To accurately diagnose and eliminate the problem, it is recommended to contact a professional car service center, where a more detailed analysis of the condition of the engine control system will be carried out using diagnostic equipment.

How to diagnose a fault code P1015?

Diagnosing the P1015 trouble code involves a series of steps to identify the cause and resolve the problem. Here are some basic steps you can take:

  1. Checking fault codes:
    • Use a diagnostic scan tool to read trouble codes from the engine management system. Check for information about the P1015 code and other possible codes that may appear.
  2. Checking connections and wiring:
    • Inspect the wiring harnesses, connections, and connectors associated with the reductant control module and the reductant quality sensor. Repair breaks, short circuits or other damage.
  3. Checking the reducing agent level:
    • Make sure the reducing agent level in the tank is within the recommended range. Add reducing agent if necessary.
  4. Testing the reducing agent quality sensor:
    • Check the operation of the reducing agent quality sensor. Use a diagnostic tool to monitor the data coming from the sensor and check if it matches the expected values.
  5. Testing the reducing agent control module:
    • Test the reductant control module using diagnostic equipment. Check its functionality and update the software if necessary.
  6. Additional tests and diagnostics:
    • Depending on the results of the previous steps, additional tests may be required, such as a data circuit test, voltage measurements, and additional sensor tests.
  7. Professional diagnostics:
    • If you do not have experience in diagnosing and repairing cars, it is recommended that you contact a professional car service for a more accurate diagnosis and repair of the problem.

Remember that diagnosing P1015 requires certain knowledge and experience, so if necessary, it is better to turn to professionals.

Diagnostic errors

Various errors can occur when diagnosing the P1015 trouble code, especially if basic procedures and recommendations are not followed. Some common mistakes include:

  1. Insufficient checking of connections and wiring: Missed breaks, shorts, or damage in wiring may be missed during a cursory inspection, leading to an incorrect diagnosis.
  2. Ignoring other fault codes: The priority should be to identify all trouble codes, not just P1015. Ignoring other codes may result in an incomplete diagnosis.
  3. Incorrect interpretation of sensor data: Misunderstanding of the values ​​coming from the reducing agent quality sensor can lead to an incorrect interpretation of the cause of the malfunction.
  4. Insufficient diagnosis of the reducing agent control module: Failure to thoroughly test and diagnose the reducer control module itself may result in problems with its operation being missed.
  5. Ignoring technical bulletins: Vehicle manufacturers may issue technical bulletins containing information about known problems and how to resolve them. Ignoring them may result in missing important information.
  6. Failure to use professional diagnostic equipment: Incorrect or insufficient equipment can make accurate diagnosis difficult and lead to incorrect results.
  7. Insufficient expertise in the engine management system: An incorrect understanding of the operating principles of the engine control system can lead to errors in diagnosis and repair.

In the case of code P1015, it is recommended to contact professionals, especially if you have no experience in diagnosing and repairing cars.

How serious is the fault code? P1015?

Trouble code P1015 indicates problems with the reductant quality sensor in the engine management system. Depending on the specific cause and nature of the problem, the severity of this code may vary.

In some cases, P1015 can cause the following:

  1. Lost performance: A faulty reductant quality sensor can affect engine performance, which can result in loss of power and poor overall performance.
  2. Unstable engine operation: Incorrect data from the sensor can cause unstable engine operation, manifested by shaking, rattling or other anomalies.
  3. Increased fuel consumption: A faulty sensor can affect the efficiency of fuel-air mixing, resulting in increased fuel consumption.
  4. Operating mode limitation: In some cases, the control system may enter a limited operation mode to prevent possible damage.

It's important to note that a P1015 code can be caused by a variety of things, and its severity will depend on your specific circumstances. It is recommended to contact a professional car service to diagnose and fix the problem.

What repair will help eliminate the code? P1015?

Troubleshooting trouble code P1015 may involve several steps depending on the specific cause of the problem. Here are some general repair recommendations:

  1. Replacing the reducing agent quality sensor: If the reducing agent quality sensor is identified as the source of the problem, replacing that sensor may resolve the problem. Typically the sensor can be easily replaced without the need for complex repairs.
  2. Checking and replacing wiring: Perform a thorough check of the wiring and connections associated with the reducing agent quality sensor. Replace damaged or broken wires and repair any loose connections.
  3. Checking and servicing the reducing agent control module: Pay attention to the operation of the reducing agent control module. If the module is faulty, it can be repaired or replaced. Also check for software updates.
  4. Checking the reducing agent level: Make sure the reducing agent level in the tank is within the recommended range. Add reducing agent if necessary.
  5. Professional diagnostics: In case of difficulties or if the cause of the malfunction is not obvious, it is recommended to contact a professional car service for additional diagnostics and repairs.

Keep in mind that the exact repair steps may depend on your specific vehicle model and the nature of the problem. It is recommended to carry out repairs in accordance with the vehicle manufacturer's recommendations and contact qualified specialists if necessary.

DTC Ford P1015 Short Explanation

P1015 – Brand-specific information

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