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 pump in your car that helps cool the air going into the engine is not spinning fast enough.
The charge air cooler coolant pump is responsible for circulating coolant to reduce the temperature of the air entering the engine. If it runs slower than expected, it can affect engine performance.
The P2B84 code indicates that the engine control module (ECM) has detected that the charge air cooler coolant pump A is operating below its expected speed. This could be due to electrical issues, mechanical failure, or blockages in the system.
• Reduced engine performance
• Check Engine Light illuminated
• Engine overheating
• Faulty charge air cooler coolant pump
• Electrical issues such as a bad relay or wiring
• Blockage or restriction in the coolant system
ECM: Engine Control Module
Coolant: A fluid used to reduce the temperature of the engine
• Check for any stored trouble codes and freeze frame data.
• Inspect the charge air cooler coolant pump and its wiring.
• Test the electrical connections and relay associated with the pump.
• Replace the charge air cooler coolant pump if faulty.
• Repair or replace damaged wiring or connectors.
• Clear any blockages in the coolant system.
• OBD-II scanner
• Multimeter
• Coolant system pressure tester
$200 - $600
Moderate
• Ford F-150
• Chevrolet Silverado
• Dodge Ram
• Regular maintenance of the cooling system
• Check coolant levels frequently
• Inspect and replace worn-out hoses and clamps
Engine Performance
• Do not ignore the Check Engine Light.
• Have the cooling system inspected regularly.
• Avoid driving the vehicle if overheating occurs.
Check with the vehicle manufacturer for warranty coverage on cooling system components.
This code has become more common with the increased use of turbocharged engines, which rely on charge air coolers.
Moderate – Addressing this issue promptly can prevent engine damage.
Driving with an overheating engine can cause severe damage and is unsafe.
• Engine running
• Coolant system pressurized
The charge air cooler coolant pump is typically located near the radiator or intercooler.
Q: Can I drive with a P2B84 code?
A: It's not recommended to drive for long periods with this code, as it can lead to engine overheating.
Q: How do I clear a P2B84 code?
A: After repairing the issue, use an OBD-II scanner to clear the code from the ECM.
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