P1245 Mazda Code - Alternator Load Input Failed Low
Quick Answer
The Powertrain Control Module (PCM) monitors the circuit, and will set the code when the input is not within a calibrated limit for a calibrated amount of time. Common causes include Faulty Alternator/Generator, Alternator/Generator harness is open or shorted, Alternator/Generator 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
- P1245 Mazda indicates Alternator Load Input Failed Low.
- Common causes
- Common causes include Faulty Alternator/Generator, Alternator/Generator harness is open or shorted, Alternator/Generator 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.
Code P1245 Mazda Description
What are the Possible Causes of the DTC P1245 Mazda?
- Faulty Alternator/Generator
- Alternator/Generator harness is open or shorted
- Alternator/Generator circuit poor electrical connection
How to Fix the DTC P1245 Mazda?
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 P1245 Mazda 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 P1245 Mazda code?
Need more information on how to fix the P1245 Mazda code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1245 Mazda code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1245 Mazda Code
1. What does the OBDII code P1245 mean on a Mazda?
P1245 indicates "Alternator Load Input Failed Low," meaning the vehicle's ECU is detecting an issue with the alternator’s load signal input.
2. What are the common symptoms of the P1245 code on a Mazda?
Symptoms may include difficulty starting the vehicle, dimming headlights, a charging system warning light, and fluctuating battery voltage.
3. What causes the P1245 code to appear?
Common causes include a faulty alternator, damaged wiring or connectors in the alternator load circuit, or a malfunctioning ECU.
4. How can I diagnose the P1245 code?
Start by inspecting the alternator, wiring, and connectors for damage or corrosion. Use a multimeter to test the alternator’s output and check for proper voltage signals.
5. Can driving with a P1245 code damage my Mazda?
Yes, driving with this code could lead to battery drainage and eventual stalling, as the alternator may not charge the battery properly.
6. How do I fix the P1245 code on a Mazda?
Repairs may include replacing the alternator, repairing or replacing damaged wiring or connectors, and ensuring the alternator load signal is reaching the ECU.
7. How much does it cost to repair the P1245 code?
Repair costs can vary depending on the issue, but replacing an alternator typically costs between $300 and $700, including labor.
8. Can a weak battery cause the P1245 code?
While not a direct cause, a weak or failing battery can exacerbate alternator issues, potentially triggering the P1245 code.
9. Do I need special tools to fix the P1245 code?
A multimeter and an OBDII scanner are essential for diagnosing and verifying repairs, but some repairs may require basic hand tools.
10. How can I prevent the P1245 code from occurring?
Regularly inspect the alternator, wiring, and battery for signs of wear or damage, and ensure the charging system is maintained properly.
Discuss the causes and fixes for P1245 Mazda OBDII Code
Code P1245 Mazda comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
