P0273 Chevrolet Code - Cylinder 5 Injector Control Circuit Low Voltage
Quick Answer
The P0273 code for Chevrolet vehicles indicates a problem with the injector control circuit for cylinder 5, specifically a low voltage issue. Common causes include Faulty fuel injector in cylinder 5, Wiring issue in the injector control circuit, Poor electrical connection to the fuel injector. 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
- P0273 Chevrolet indicates Cylinder 5 Injector Control Circuit Low Voltage.
- Common causes
- Common causes include Faulty fuel injector in cylinder 5, Wiring issue in the injector control circuit, Poor electrical connection to the fuel injector.
- 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 P0273 Chevrolet Description
The P0273 code for Chevrolet vehicles indicates a problem with the injector control circuit for cylinder 5, specifically a low voltage issue. This means that the Engine Control Module (ECM) has detected that the voltage in the control circuit for the fuel injector in cylinder 5 is below the specified range. The fuel injector is responsible for delivering the precise amount of fuel into the cylinder for combustion. When the voltage is low, it can result in improper fuel delivery, affecting the engine's performance.
Common Causes of P0273 Chevrolet
- Faulty fuel injector in cylinder 5
- Wiring issue in the injector control circuit
- Poor electrical connection to the fuel injector
- Malfunctioning ECM
- Mechanical issue in cylinder 5
Symptoms of P0273 Chevrolet
- Rough idling or engine misfires
- Hesitation or stumbling during acceleration
- Reduced engine power
- Stalling or difficulty starting the engine
How to Fix P0273 Chevrolet
- Begin by performing a thorough inspection of the fuel injector in cylinder 5, checking for any signs of damage or clogging. Replace the fuel injector if necessary.
- Inspect the wiring in the injector control circuit, looking for any breaks or shorts. Repair or replace any damaged wiring.
- Check the electrical connections to the fuel injector, ensuring they are secure and free of corrosion. Clean or replace any faulty connections.
- Test the ECM to determine if it is functioning correctly. If the ECM is faulty, it may need to be reprogrammed or replaced.
- Verify that there are no mechanical issues in cylinder 5 that could be affecting the fuel injector's performance, such as a compression problem or a valve issue.
Cost to Fix P0273 Chevrolet
The cost of repairing a P0273 code in a Chevrolet vehicle can vary depending on the specific cause of the issue. On average, replacing a fuel injector can cost between $150 and $300 per injector, not including labor costs. Wiring repairs or replacements may range from $50 to $200, while ECM reprogramming or replacement can cost several hundred dollars. The total repair cost, including parts and labor, could range from $300 to $1000 or more. It is advisable to consult with a qualified mechanic to get an accurate estimate based on the specific vehicle and the extent of the repair needed.
Tech Notes for P0273 Chevrolet
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Information for Specific Chevrolet Models
- P0273 2014 Chevrolet Silverado — Cylinder 5 Injector Control Circuit Low Voltage
- P0273 2015 Chevrolet Silverado — Cylinder 5 Injector Control Circuit Low Voltage
- P0273 2016 Chevrolet Silverado — Cylinder 5 Injector Control Circuit Low Voltage
- P0273 2017 Chevrolet Silverado — Cylinder 5 Injector Control Circuit Low Voltage
- P0273 2018 Chevrolet Silverado — Cylinder 5 Injector Control Circuit Low Voltage
Frequently Asked Questions about P0273 Chevrolet Code
1. What does the OBDII code P0273 mean for a Chevrolet?
P0273 indicates a low voltage issue in the cylinder 5 injector control circuit, meaning the engine control module (ECM) is detecting an electrical problem with the fuel injector for cylinder 5.
2. What are the common symptoms of code P0273 in a Chevrolet?
Symptoms may include rough idling, engine misfires, reduced fuel efficiency, poor acceleration, and the check engine light turning on.
3. What causes the P0273 code to appear?
Common causes include a faulty fuel injector, damaged or corroded wiring in the injector circuit, a bad ECM, or a poor electrical connection to the cylinder 5 injector.
4. Can you drive with a P0273 code on a Chevrolet?
Driving with a P0273 code is not recommended as it can lead to poor performance, increased emissions, and potential engine damage if the misfire continues.
5. How do you diagnose a P0273 code on a Chevrolet?
Diagnosis involves checking the wiring and connectors for damage or corrosion, testing the cylinder 5 fuel injector with a multimeter, and verifying proper voltage and ground signals from the ECM.
6. Is a faulty injector the only possible cause of code P0273?
No, other causes include wiring problems, connector issues, or even a malfunctioning ECM causing the low voltage condition.
7. How much does it cost to repair a P0273 code on a Chevrolet?
Repair costs vary depending on the root cause. Replacing a fuel injector may cost $200–$500, while fixing wiring or connectors may be less expensive.
8. Can a dirty fuel injector cause the P0273 code?
A dirty injector is unlikely to cause a low voltage issue, as P0273 is more specifically related to electrical problems rather than clogging.
9. What tools are needed to troubleshoot a P0273 code?
Basic tools include a multimeter to test electrical circuits, a scan tool to clear and read codes, and possibly a noid light to check the injector's electrical signal.
10. What happens if the P0273 code is ignored?
Ignoring this code can lead to worsening engine misfires, higher emissions, potential catalytic converter damage, and reduced engine performance over time.
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