AutoCodes – Ford – P203E Ford

P203E Ford Code - Reductant Level Sensor Circuit Intermittent/Erratic

Quick Answer

The task of the discrete level sensor is to measure the tank level at 3 different heights. Common causes include Faulty Reductant Level Sensor, Reductant Level Sensor harness is open or shorted, Reductant Level 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: P203E Ford indicates Reductant Level Sensor Circuit Intermittent/Erratic.
Common causes: Common causes include Faulty Reductant Level Sensor, Reductant Level Sensor harness is open or shorted, Reductant Level 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 2,640

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 Jan 16, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P203E Ford Description

The task of the discrete level sensor is to measure the tank level at 3 different heights. The determination of a reductant level is limited to liquid reductant. Frozen reductant cannot be detected. The measured level will be used to update the calculation of remaining quantity in the reductant tank.
The level sensor consists of four high-grade stainless steel pins. The length of each pin defines the tank level (height) which is to be checked. Only three pins can be used for level evaluation. The fourth pin is used as ground pin. Due to the electrical conductivity of Urea the level sensor will determine whether the tank level is above or below the respective level sensor position. This information will be directly evaluated by the ECU.

OBDII Code P203E Ford - Reductant Level Sensor Circuit Intermittent/Erratic - AutoCodes.com — P203E Ford Code - Reductant Level Sensor Circuit Intermittent/Erratic

What does this mean?

What are the Possible Causes of the DTC P203E Ford?

Faulty Reductant Level Sensor
Reductant Level Sensor harness is open or shorted
Reductant Level Sensor circuit poor electrical connection

How to Fix the DTC P203E Ford?

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 P203E Ford 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 P203E Ford Code

1. What are the common symptoms of OBDII code P203E Ford (Reductant Level Sensor Circuit Intermittent/Erratic)?

- Common symptoms include the check engine light being illuminated, reduced engine performance, and possible issues with the vehicle's emissions system.

2. What are the possible causes of OBDII code P203E Ford?

- The code P203E Ford is typically caused by a faulty reductant level sensor, wiring issues in the sensor circuit, or a malfunction in the reductant control module.

3. How can I diagnose OBDII code P203E Ford?

- Diagnosing this code involves using a scan tool to read the code and checking the reductant level sensor and its wiring for any visible damage or issues.

4. What are the repair options for OBDII code P203E Ford?

- Repair options include replacing the reductant level sensor, repairing any damaged wiring in the sensor circuit, or reprogramming the reductant control module if needed.

5. Can I drive my vehicle with OBDII code P203E Ford?

- It is not recommended to drive your vehicle with this code present, as it can affect the vehicle's emissions system and overall performance.

6. How urgent is it to address OBDII code P203E Ford?

- It is recommended to address this code promptly to prevent any potential damage to the emissions system and ensure the vehicle is operating efficiently.

7. Is OBDII code P203E Ford a common issue in Ford vehicles?

- While not extremely common, OBDII code P203E Ford can occur in Ford vehicles equipped with a reductant level sensor system.

8. How much does it typically cost to repair OBDII code P203E Ford?

- The cost of repairing this code can vary depending on the specific issue, but it may range from $200 to $500 for parts and labor.

9. Can I reset OBDII code P203E Ford with a simple scan tool?

- Resetting this code with a scan tool may temporarily clear the code, but it is important to diagnose and repair the underlying issue to prevent it from reoccurring.

10. Are there any preventive maintenance tips to avoid OBDII code P203E Ford?

- Regularly inspecting the reductant level sensor and its wiring for any signs of damage, as well as following the manufacturer's recommended maintenance schedule, can help prevent this code from appearing.