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P1244 Mazda Code - Alternator Load Input Failed High

Quick Answer

The P1244 diagnostic trouble code (DTC) in a Mazda indicates that the alternator load input has failed high. Common causes include Faulty alternator, Damaged alternator load input sensor, Poor electrical connection in the circuit. 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
P1244 Mazda indicates Alternator Load Input Failed High.
Common causes
Common causes include Faulty alternator, Damaged alternator load input sensor, Poor electrical connection in the circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1244 Mazda Description

The P1244 diagnostic trouble code (DTC) in a Mazda indicates that the alternator load input has failed high. This means that the Engine Control Module (ECM) has detected an unusually high voltage in the alternator load input circuit. The alternator load input is a vital component in the vehicle's charging system, responsible for monitoring the electrical load on the alternator.

OBDII Code P1244 Mazda - Alternator Load Input Failed High
P1244 Mazda Code - Alternator Load Input Failed High

Common Causes of P1244 Mazda

  1. Faulty alternator
  2. Damaged alternator load input sensor
  3. Poor electrical connection in the circuit
  4. Malfunctioning ECM

Symptoms of P1244 Mazda

  1. Dimming or flickering lights on the dashboard
  2. Difficulty starting the vehicle
  3. Battery warning light illuminated on the dashboard
  4. Electrical system malfunctions, such as power windows or radio not working properly

How to Fix P1244 Mazda

  1. Begin by conducting a thorough inspection of the alternator, alternator load input sensor, and the wiring harness for any visible damage.
  2. Test the alternator load input sensor using a multimeter to determine if it is functioning correctly.
  3. Check the electrical connections in the circuit for corrosion or looseness, and repair or replace as needed.
  4. If the alternator is found to be faulty, replace it with a new or remanufactured unit.
  5. Clear the DTC with a scan tool and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1244 Mazda

The cost estimate for repairing a P1244 code in a Mazda can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. On average, the repair costs for this issue can range from $200 to $500, including parts and labor. It is important to factor in additional costs for diagnostic time and any other necessary repairs that may be uncovered during the inspection process. It is recommended to obtain quotes from multiple reputable auto repair shops to compare prices and ensure a fair estimate.

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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 P1244 Mazda Code

1. What does the OBDII code P1244 mean for a Mazda?

P1244 indicates that the alternator load input has failed high, meaning the vehicle’s ECU detected an abnormal voltage signal from the alternator load circuit.

2. What are the common symptoms of the P1244 code in a Mazda?

Symptoms may include the check engine light illuminating, electrical system malfunctions, battery charging issues, or dimming headlights.

3. What causes the P1244 code on a Mazda?

Common causes include a faulty alternator, damaged wiring or connectors in the alternator circuit, or a malfunctioning ECU.

4. Can a bad alternator trigger the P1244 code?

Yes, a malfunctioning alternator can cause the ECU to detect a high input voltage from the alternator load circuit, triggering the P1244 code.

5. How can you diagnose the P1244 code on a Mazda?

Start by inspecting the alternator, wiring, and connectors for damage or corrosion. Use a multimeter to check voltage and continuity in the alternator circuit.

6. What repairs are typically needed to fix the P1244 code?

Repairs may include replacing the alternator, fixing damaged wiring, cleaning or replacing corroded connectors, or reprogramming the ECU.

7. Can driving with the P1244 code cause further damage to my Mazda?

Yes, ignoring this code may lead to battery drainage or electrical system failure, potentially stranding the vehicle.

8. How much does it usually cost to fix the P1244 code on a Mazda?

Repair costs vary, but alternator replacement typically ranges from $300 to $500, while minor wiring repairs may cost less.

9. Does the P1244 code affect vehicle performance?

It can cause electrical issues that may indirectly affect performance, such as dim headlights or malfunctioning accessories.

10. Is it safe to drive with the P1244 code active on my Mazda?

While the vehicle may still run, it’s not recommended to drive for long periods as electrical system failure could occur.

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