Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer thinks the exhaust valve is not in the right place, like when a door isn't fully closed.
The code P2B97 is triggered when the exhaust pressure control valve's position is outside the expected range that the car's computer has learned over time.
The Exhaust Pressure Control Valve A is responsible for controlling the pressure in the exhaust system. The car's engine control module (ECM) monitors the position of this valve. If the valve position exceeds the learned limit, it indicates a potential malfunction or misalignment of the valve, triggering the P2B97 code.
• Check Engine Light is on
• Reduced engine performance
• Unusual exhaust noise
• Faulty exhaust pressure control valve
• Wiring issues or poor electrical connections
• Faulty ECM or software issues
ECM: Engine Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to confirm the code.
• Inspect the exhaust pressure control valve for damage or blockage.
• Check the wiring and connections for the valve.
• Replace the faulty exhaust pressure control valve.
• Repair or replace damaged wiring or connectors.
• Update or reprogram the ECM if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Dodge Ram 1500
• Regular maintenance of the exhaust system
• Ensure proper electrical connections
• Update ECM software as recommended
Engine Performance
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if unsure.
• Avoid driving the vehicle hard until the issue is resolved.
Check with your vehicle manufacturer for specific warranty coverage related to emission system components.
This code has been associated with exhaust system issues in vehicles with advanced emission controls.
Moderate – It should be addressed soon to prevent potential damage to the exhaust system.
Driving with a malfunctioning exhaust system can lead to increased emissions and may not comply with local emissions regulations.
• Engine at operating temperature
• Vehicle stationary
The exhaust pressure control valve is typically located near the exhaust manifold or turbocharger.
Q: Can I drive with a P2B97 code?
A: It's not recommended to drive for long periods with this code active, as it may lead to further damage.
Q: How can I reset the P2B97 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is resolved, it should not return.
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