Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer thinks the pressure in the exhaust system on one side of the engine is too low.
The engine control module (ECM) monitors the exhaust pressure to ensure proper engine operation. If the pressure is too low, it can affect engine performance and emissions.
The P28FA code indicates that the ECM has detected a lower than expected exhaust pressure in bank 2. This can be due to a leak, sensor failure, or other mechanical issues in the exhaust system.
• Check Engine Light on
• Reduced engine performance
• Poor fuel economy
• Exhaust leak in bank 2
• Faulty exhaust pressure sensor
• Blocked or restricted exhaust system
ECM: Engine Control Module
Exhaust Manifold: A part of the exhaust system that collects exhaust gases from the engine cylinders.
• Inspect the exhaust system for leaks or damage.
• Test the exhaust pressure sensor for proper operation.
• Check for blockages or restrictions in the exhaust system.
• Repair any exhaust leaks found.
• Replace the faulty exhaust pressure sensor.
• Clear any blockages in the exhaust system.
• OBD-II scanner
• Pressure gauge
• Wrench set
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Tacoma
• Regularly inspect the exhaust system for leaks.
• Replace exhaust components as needed.
• Ensure proper maintenance of the vehicle.
Engine Performance
• Have your vehicle inspected by a professional if this code appears.
• Avoid driving with this code active for extended periods.
Check with your vehicle manufacturer for warranty coverage on exhaust components.
This code has been associated with exhaust system issues in vehicles with dual exhaust systems.
Moderate – Addressing this issue promptly can prevent further engine performance problems.
Driving with a faulty exhaust system can lead to increased emissions and potential safety hazards.
• Engine running
• Vehicle at operating temperature
The exhaust pressure sensor for bank 2 is typically located on the exhaust manifold or pipe on the second bank of cylinders.
Q: What does 'bank 2' mean?
A: Bank 2 refers to the side of the engine opposite bank 1, which is usually the side without cylinder 1.
Q: Can I drive my car with a P28FA code?
A: It's not recommended to drive for long periods with this code active, as it can lead to further engine issues.
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