P1273 Mazda Code - Cylinder #3 High To Low Side Open
Quick Answer
The P1273 code for Mazda vehicles indicates that there is a high to low side open circuit in cylinder #3. Common causes include Clogged fuel injector in cylinder #3, Faulty wiring or connectors related to the fuel injector, Fuel injector driver malfunction in the ECM. 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
- P1273 Mazda indicates Cylinder #3 High To Low Side Open.
- Common causes
- Common causes include Clogged fuel injector in cylinder #3, Faulty wiring or connectors related to the fuel injector, Fuel injector driver malfunction in the ECM.
- 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 P1273 Mazda Description
The P1273 code for Mazda vehicles indicates that there is a high to low side open circuit in cylinder #3. In simpler terms, this means that there is an issue with the fuel injector for the third cylinder. The fuel injector is responsible for delivering fuel into the combustion chamber of the engine at the precise time and in the correct amount. When this injector is not functioning properly, it can lead to a variety of performance issues for the vehicle.
Common Causes of P1273 Mazda
- Clogged fuel injector in cylinder #3
- Faulty wiring or connectors related to the fuel injector
- Fuel injector driver malfunction in the ECM
- Fuel pressure issues affecting injector performance
- Engine control module (ECM) malfunction
Symptoms of P1273 Mazda
- Rough idling or engine misfires
- Decreased fuel efficiency
- Lack of power during acceleration
- Engine stalling
- Check engine light illuminated
How to Fix P1273 Mazda
- Diagnose the specific issue with the fuel injector in cylinder #3 using a scan tool to pinpoint the exact cause of the high to low side open circuit.
- Inspect the wiring and connectors associated with the fuel injector for any signs of damage or corrosion. Repair or replace as needed.
- Test the fuel injector itself to determine if it is clogged or not functioning properly. Clean or replace the injector if necessary.
- Check the fuel pressure to ensure it is within the manufacturer's specifications. Address any fuel pressure issues that may be affecting the injector's performance.
- Clear the diagnostic trouble codes, reset the ECM, and test drive the vehicle to verify that the issue has been resolved.
Cost to Fix P1273 Mazda
The cost of repairing a P1273 code for a Mazda vehicle can vary depending on the specific cause of the issue and the labor rates in your area. Typically, the cost of replacing a fuel injector can range from $200 to $500 per injector, not including labor. Additional costs for diagnostic testing, parts, and labor could bring the total repair cost to around $300 to $800. It's important to consult with a trusted mechanic or repair shop to get an accurate estimate based on your vehicle's make and model. Remember that labor rates can vary widely, so it's essential to shop around for the best deal.
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Frequently Asked Questions about P1273 Mazda Code
1. What does the OBDII code P1273 mean for a Mazda?
P1273 indicates "Cylinder #3 High To Low Side Open," which means there is an electrical issue in the circuit controlling the fuel injector for cylinder #3.
2. What are the common symptoms of code P1273 in a Mazda?
Symptoms may include engine misfires, rough idling, poor fuel economy, reduced power, hesitation during acceleration, and the check engine light turning on.
3. What causes code P1273 to appear in a Mazda?
Common causes include a faulty fuel injector for cylinder #3, damaged wiring or connectors in the injector circuit, a malfunctioning powertrain control module (PCM), or corrosion in electrical connections.
4. Can I drive my Mazda with the P1273 code?
It’s not recommended to drive for extended periods with this code, as a misfiring cylinder can cause further engine damage and poor performance.
5. How is the P1273 code diagnosed in a Mazda?
A mechanic will use a scan tool to confirm the code, inspect the wiring and connections for cylinder #3, test the fuel injector, and potentially check the PCM for faults.
6. How do I fix the P1273 code on a Mazda?
Repairs may include replacing the faulty fuel injector, repairing or replacing damaged wires or connectors, cleaning corroded electrical contacts, or reprogramming or replacing the PCM.
7. How much does it cost to fix the P1273 code on a Mazda?
The cost varies depending on the issue but typically includes $150–$300 for a fuel injector replacement and additional costs for wiring repairs or PCM reprogramming.
8. Can a dirty fuel injector cause the P1273 code?
No, the P1273 code is related to an electrical issue, not injector clogging. However, a faulty injector could trigger the code.
9. What tools are needed to troubleshoot the P1273 code?
A diagnostic scan tool, multimeter, and possibly a noid light for testing the injector circuit are commonly used to troubleshoot this code.
10. Will resetting the check engine light fix the P1273 code?
Resetting the light will clear the code temporarily, but the underlying issue must be repaired to prevent the code from returning.
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