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 a part in your car that helps control the exhaust system is getting too hot or using too much power.
The P2B99 code indicates that the current or temperature of the exhaust pressure control valve driver is higher than expected.
The exhaust pressure control valve is responsible for regulating the pressure in the exhaust system. The 'Driver' refers to the electronic component that controls the valve. If this driver is experiencing higher than normal current draw or temperature, it suggests a potential fault or failure in the system.
• Check Engine Light is on
• Poor engine performance
• Increased emissions
• Faulty exhaust pressure control valve
• Wiring issues or short circuits
• Faulty control module
Driver: An electronic component that controls a device or system.
Exhaust System: A system that directs exhaust gases away from the engine.
• Scan the vehicle for codes and freeze frame data.
• Inspect the exhaust pressure control valve and wiring.
• Test the control module for faults.
• Replace the exhaust pressure control valve if faulty.
• Repair or replace any damaged wiring.
• Replace the control module if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$200 - $600
Moderate
• Ford F-150
• Chevrolet Silverado
• Ram 1500
• Regular maintenance checks
• Ensure proper exhaust system operation
• Inspect wiring for damage regularly
Engine Performance
• Have the vehicle inspected by a professional.
• Avoid driving long distances until repaired.
Check with your vehicle manufacturer for warranty coverage on emissions components.
This code has been associated with exhaust system issues in vehicles with advanced emission controls.
Moderate – Addressing this issue soon can prevent further damage.
Ignoring this code may lead to increased emissions, which could affect vehicle compliance with environmental regulations.
• Engine at operating temperature
• Vehicle in park or neutral
The exhaust pressure control valve is typically located near the exhaust manifold or turbocharger.
Q: Can I drive with a P2B99 code?
A: It's not recommended as it may lead to further damage or increased emissions.
Q: What happens if I ignore this code?
A: Ignoring it can lead to poor engine performance and potential damage to the exhaust system.
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