P1279 Toyota Code - Port Injector Circuit Number 4
Quick Answer
P1279 Toyota indicates Port Injector Circuit Number 4. Common causes include Faulty Fuel Injector, Fuel Injector harness is open or shorted, Fuel Injector 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
- P1279 Toyota indicates Port Injector Circuit Number 4.
- Common causes
- Common causes include Faulty Fuel Injector, Fuel Injector harness is open or shorted, Fuel Injector 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 P1279 Toyota Description
What are the Possible Causes of the DTC P1279 Toyota?
- Faulty Fuel Injector
- Fuel Injector harness is open or shorted
- Fuel Injector circuit poor electrical connection
How to Fix the DTC P1279 Toyota?
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 P1279 Toyota 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 P1279 Toyota Code
1. What are the common symptoms of OBDII code P1279 in a Toyota related to the Port Injector Circuit Number 4?
The common symptoms include rough idle, engine misfires, poor acceleration, and potential stalling of the vehicle.
2. What are the possible causes of OBDII code P1279 in a Toyota?
Possible causes include a faulty fuel injector in circuit number 4, wiring issues in the injector circuit, a malfunctioning Engine Control Module (ECM), or a poor electrical connection.
3. How can I diagnose the OBDII code P1279 in my Toyota related to the Port Injector Circuit Number 4?
You can diagnose this code by performing a visual inspection of the injector and its wiring, testing the injector resistance, checking for continuity in the wiring, and using a scan tool to monitor live data and perform injector tests.
4. What are some repair tips for resolving OBDII code P1279 in a Toyota?
Repair tips include replacing the faulty fuel injector in circuit number 4, repairing any damaged wiring or connectors, resetting the ECM, and ensuring proper electrical connections.
5. Can driving with OBDII code P1279 in a Toyota cause further damage to the vehicle?
Continuing to drive with this code may lead to poor engine performance, decreased fuel efficiency, and potential damage to the catalytic converter due to unburned fuel entering the exhaust system.
6. How much does it typically cost to repair OBDII code P1279 in a Toyota at a mechanic's shop?
The cost of repair can vary depending on the exact cause of the code, but it may range from $150 to $500, including parts and labor.
7. Is it safe to continue driving my Toyota with OBDII code P1279 related to the Port Injector Circuit Number 4?
It is not recommended to drive the vehicle with this code present, as it can lead to further engine problems and potential safety hazards on the road.
8. Can I reset the OBDII code P1279 in my Toyota by disconnecting the battery?
While disconnecting the battery may clear the code temporarily, it is not a recommended method for resolving the underlying issue causing the code.
9. How often does OBDII code P1279 related to the Port Injector Circuit Number 4 occur in Toyota vehicles?
This code can occur sporadically in Toyota vehicles, especially in older models or those with high mileage, due to wear and tear on the fuel injectors and wiring.
10. Will OBDII code P1279 in my Toyota cause the Check Engine Light to illuminate?
Yes, this code will trigger the Check Engine Light to illuminate on the dashboard, indicating a problem with the Port Injector Circuit Number 4.
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