Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This means the car's coolant pump isn't spinning as fast as it should, which can cause the engine to overheat.
The code is triggered when the engine control module (ECM) detects that the coolant pump is not operating at the expected speed.
P2B87 indicates that the coolant pump 'A' is not reaching its required speed, which is necessary for proper engine cooling. The ECM monitors the speed of the pump and compares it to expected values. If the pump speed is lower than expected, this code is set.
• Engine overheating
• Check engine light illuminated
• Reduced engine performance
• Faulty coolant pump
• Electrical issues such as wiring or connector problems
• Faulty coolant pump control module
ECM: Engine Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Connect an OBD-II scanner and verify the code.
• Inspect the coolant pump and its electrical connections.
• Test the coolant pump speed using diagnostic tools.
• Replace the faulty coolant pump.
• Repair or replace damaged wiring or connectors.
• Replace the coolant pump control module if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$200 - $600
Moderate
• Vehicle 1
• Vehicle 2
• Vehicle 3
• Regular maintenance and inspection of the cooling system.
• Ensure proper coolant levels are maintained.
• Inspect electrical connections periodically.
Engine Performance
• Do not ignore the check engine light.
• Address overheating issues promptly to avoid engine damage.
Check with the vehicle manufacturer for warranty coverage on cooling system components.
This code has been associated with issues in vehicles with electric coolant pumps, which are more common in modern vehicles.
High – Engine overheating can lead to severe damage if not addressed promptly.
Driving with an overheating engine can be dangerous and may cause further damage.
• Engine at operating temperature
• Coolant system pressurized
The coolant pump is typically located at the front of the engine, near the radiator.
Q: Can I drive with a P2B87 code?
A: It's not recommended to drive with this code as it can lead to engine overheating.
Q: How do I know if my coolant pump is failing?
A: Signs include engine overheating, unusual noises, and the check engine light being on.
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