AutoCodes – Generic – P1919

P1919 Code - Engine Coolant Temperature Signal

Quick Answer

P1919 indicates Engine Coolant Temperature Signal. Common causes include Faulty Engine Coolant Temperature Sensor, Engine Coolant Temperature Sensor harness is open or shorted, Engine Coolant Temperature 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: P1919 indicates Engine Coolant Temperature Signal.
Common causes: Common causes include Faulty Engine Coolant Temperature Sensor, Engine Coolant Temperature Sensor harness is open or shorted, Engine Coolant Temperature 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 7,223

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 Sep 28, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1919 Description

OBDII Code P1919 - Engine Coolant Temperature Signal - AutoCodes.com — P1919 Code - Engine Coolant Temperature Signal

What does this mean?

What are the Possible Causes of the DTC P1919?

Faulty Engine Coolant Temperature Sensor
Engine Coolant Temperature Sensor harness is open or shorted
Engine Coolant Temperature Sensor circuit poor electrical connection

How to Fix the DTC P1919?

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 P1919 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 P1919 code?

Need more information on how to fix the P1919 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1919 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1919 Ford — Engine Coolant Temperature Signal
P1919 Lincoln — Engine Coolant Temperature Signal
P1919 Mazda — Engine Coolant Temperature Signal
P1919 Mercury — Engine Coolant Temperature Signal

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 P1919 Code

1. What are the common symptoms of OBDII code P1919 (Engine Coolant Temperature Signal)?

- Common symptoms include engine overheating, rough idling, poor fuel efficiency, and potential coolant leaks.

2. What are the possible causes of OBDII code P1919?

- The code P1919 can be triggered by issues such as a faulty engine coolant temperature sensor, a malfunctioning thermostat, or wiring/connectivity issues.

3. How can I diagnose OBDII code P1919?

- Diagnosing code P1919 typically involves using an OBDII scanner to read the code, checking the coolant temperature sensor's readings, and inspecting the thermostat and related components.

4. Can a faulty engine coolant temperature sensor cause OBDII code P1919?

- Yes, a faulty engine coolant temperature sensor is a common cause of OBDII code P1919, as it can provide inaccurate readings to the vehicle's ECU.

5. What are some repair tips for resolving OBDII code P1919?

- Repair tips for resolving code P1919 may include replacing the engine coolant temperature sensor, checking and replacing the thermostat if necessary, and ensuring proper wiring connections.

6. Is it safe to drive with OBDII code P1919 present?

- It is not recommended to drive with OBDII code P1919 present, as it can lead to engine overheating and potential damage if not addressed promptly.

7. Can a low coolant level trigger OBDII code P1919?

- Yes, a low coolant level can potentially trigger code P1919, as the engine coolant temperature sensor may not be able to accurately measure the coolant temperature.

8. How important is it to address OBDII code P1919 promptly?

- Addressing OBDII code P1919 promptly is crucial to prevent potential engine damage, ensure proper engine performance, and maintain fuel efficiency.

9. Can a DIY enthusiast fix OBDII code P1919 at home?

- Depending on the underlying cause, DIY enthusiasts may be able to fix code P1919 at home by replacing the coolant temperature sensor or thermostat, following proper repair procedures.

10. Will resetting the OBDII system make OBDII code P1919 disappear permanently?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing code P1919 is not fixed, the code is likely to reappear. It is important to diagnose and repair the issue to prevent recurrence.