Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the part of the car that controls the vacuum pump. It's like a switch isn't working right, so the pump can't do its job.
The vacuum pump is essential for various systems in the car, such as the brakes. This code indicates an issue with the electrical circuit controlling the vacuum pump, specifically an open circuit in Control Circuit B.
The P25EE code is triggered when the Engine Control Module (ECM) detects an open circuit in the vacuum pump control circuit B. This can affect the operation of systems that rely on vacuum pressure, such as the brake booster. The circuit may be open due to a broken wire, a disconnected connector, or a failed component.
• Check Engine Light is on
• Reduced braking performance
• Unusual noises from the engine compartment
• Faulty vacuum pump
• Broken or disconnected wiring in the circuit
• Failed control module
ECM: Engine Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to confirm the code.
• Inspect the vacuum pump and its wiring for damage or disconnections.
• Test the control module for proper operation.
• Repair or replace damaged wiring.
• Reconnect any disconnected connectors.
• Replace the faulty vacuum pump or control module.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Vehicle 1
• Vehicle 2
• Vehicle 3
• Regularly inspect wiring and connectors.
• Perform routine maintenance checks.
• Ensure vacuum pump is functioning properly.
Sensor Issue
• Do not ignore the Check Engine Light.
• Seek professional diagnosis if unsure.
• Avoid driving if braking performance is compromised.
Check with the vehicle manufacturer for warranty coverage on emission-related components.
This code has been associated with vehicles that have experienced wiring harness issues, particularly in models with high mileage.
High – This issue can affect braking performance, which is critical for vehicle safety.
Driving with compromised braking performance can be dangerous. Address this issue promptly to ensure vehicle safety.
• Engine running
• Vehicle stationary
The vacuum pump is usually located in the engine bay, near the engine block or the brake booster.
Q: Can I drive with this code?
A: It's not recommended to drive with this code, as it can affect your car's braking ability.
Q: How do I know if the vacuum pump is faulty?
A: A faulty vacuum pump may cause a hissing noise or reduced braking performance. A diagnostic test can confirm the issue.
Pro · Four-system diagnostics
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