AutoCodes – All – P1273 Ford

P1273 Ford Code - Cylinder #3 High To Low Side Open

Quick Answer

The Injector Driver Module (IDM) is capable of detecting individual injectors open and shorts to either ground or power while the engine is running. Common causes include Faulty Fuel Injector, Faulty Injector Driver Module (IDM), 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 Ford indicates Cylinder #3 High To Low Side Open.
Common causes
Common causes include Faulty Fuel Injector, Faulty Injector Driver Module (IDM), 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 22,289
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 17, 2024
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Code P1273 Ford Description

The Injector Driver Module (IDM) is capable of detecting individual injectors open and shorts to either ground or power while the engine is running. The Injector Driver Module is also capable of detecting right or left bank high side circuit opens or shorts to ground. The Diagnostic Trouble Code (DTC) indicates a low side-to-high side open in the circuit between the Injector Driver Module and the injector.
OBDII Code P1273 Ford - Cylinder #3 High To Low Side Open - AutoCodes.com
P1273 Ford Code - Cylinder #3 High To Low Side Open

What are the Possible Causes of the DTC P1273 Ford?

  • Faulty Fuel Injector
  • Faulty Injector Driver Module (IDM)
  • Fuel Injector harness is open or shorted
  • Fuel Injector circuit poor electrical connection

How to Fix the DTC P1273 Ford?

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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1273 Ford 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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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 P1273 Ford Code

1. What are the common symptoms of OBDII code P1273 in a Ford, indicating Cylinder #3 High To Low Side Open?

- Common symptoms include engine misfires, rough idling, loss of power, and potentially decreased fuel efficiency.

2. What can cause the OBDII code P1273 in a Ford related to Cylinder #3 High To Low Side Open?

- Possible causes include a faulty fuel injector, wiring issues, poor electrical connections, or a problem with the Engine Control Module (ECM).

3. How can I diagnose the OBDII code P1273 in a Ford cylinder #3 issue?

- Diagnosis involves checking the wiring and connections related to the fuel injector in cylinder #3, testing the injector itself, and inspecting the ECM for any faults.

4. Is it safe to continue driving with OBDII code P1273 in a Ford indicating Cylinder #3 High To Low Side Open?

- It is not recommended to drive with this issue, as it can lead to further damage to the engine and potentially pose a safety risk. It's best to address the problem promptly.

5. Can a DIY enthusiast repair the OBDII code P1273 issue in a Ford related to Cylinder #3 High To Low Side Open?

- Depending on the root cause, some DIY repairs may be possible, such as checking and cleaning electrical connections or replacing a faulty fuel injector. However, complex issues may require professional assistance.

6. What are some repair tips for resolving the OBDII code P1273 in a Ford cylinder #3 problem?

- Ensure all electrical connections are secure, inspect the wiring for any damage, test the fuel injector in cylinder #3, and consider resetting the ECM after repairs are made.

7. Will resetting the ECM clear the OBDII code P1273 in a Ford for Cylinder #3 High To Low Side Open?

- Resetting the ECM may clear the code temporarily, but if the underlying issue is not addressed, the code is likely to reappear. It's essential to diagnose and repair the root cause of the problem.

8. How much does it typically cost to repair the OBDII code P1273 in a Ford cylinder #3 issue?

- The cost of repairs can vary depending on the exact cause of the problem, the labor rates in your area, and whether you choose to do the repairs yourself or seek professional help. Costs may range from a few hundred to over a thousand dollars.

9. Can a faulty fuel injector be the sole reason for the OBDII code P1273 in a Ford cylinder #3 problem?

- While a faulty fuel injector is a common cause of this code, it's essential to thoroughly diagnose the issue to rule out other potential causes like wiring problems or ECM issues before replacing the injector.

10. How urgent is it to address the OBDII code P1273 in a Ford related to Cylinder #3 High To Low Side Open?

- It is recommended to address this issue promptly to prevent further damage to the engine and ensure optimal performance of your vehicle. Continuing to drive with this problem unresolved can lead to more significant issues down the line.

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