P1273 Mazda Code - Cylinder #3 High To Low Side Open
Quick Answer
A fault is detected by the fuel injector interface module in the secondary (rearward) fuel injector circuit Common causes include Faulty Fuel Injector, Faulty Fuel Injector Interface Module, Fuel Injector harness is open or shorted. 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 Faulty Fuel Injector, Faulty Fuel Injector Interface Module, Fuel Injector harness is open or shorted.
- 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 P1273 Mazda Description
What are the Possible Causes of the DTC P1273 Mazda?
- Faulty Fuel Injector
- Faulty Fuel Injector Interface Module
- Fuel Injector harness is open or shorted
- Fuel Injector circuit poor electrical connection
How to Fix the DTC P1273 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 P1273 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.
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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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