• Check Engine Light is on
• Rough idling
• Decreased fuel efficiency
• Faulty EGR valve
• Carbon buildup in the EGR valve
• Wiring issues or poor connections
EGR: Exhaust Gas Recirculation
OBD-II: On-Board Diagnostics, Second Generation
• P0401
• P0402
Cold Start EGR 'B' Control Stuck Open
This code means that a part of your car's engine, called the EGR valve, is not closing properly when the engine is cold. It's like a door that should be shut, but it's stuck open, letting too much air in.
The EGR (Exhaust Gas Recirculation) valve helps control emissions by recirculating a portion of the exhaust gases back into the engine cylinders. When the engine is cold, this valve should be closed, but if it's stuck open, it can cause problems.
The P1402 code indicates that the EGR valve 'B' is not closing as it should during cold start conditions. This can lead to an incorrect air-fuel mixture, affecting engine performance and emissions.
• Use an OBD-II scanner to confirm the code.
• Inspect the EGR valve for carbon buildup or damage.
• Check the wiring and connections to the EGR valve.
• Clean the EGR valve to remove any carbon buildup.
• Replace the EGR valve if it's faulty.
• Repair or replace damaged wiring or connectors.
• OBD-II scanner
• Wrench set
• Multimeter
$150 - $400
Moderate
• Ford Focus
• Volkswagen Jetta
• Chevrolet Malibu
• Regularly clean the EGR valve.
• Use high-quality fuel to reduce carbon buildup.
• Perform routine engine maintenance.
Engine Performance
• Have the EGR system inspected regularly.
• Address the issue promptly to avoid further engine problems.
Check with your vehicle manufacturer for warranty coverage on emission-related components.
The P1402 code has been reported in various vehicles, often related to EGR valve issues due to carbon buildup.
Moderate – It should be addressed soon to prevent potential engine damage.
Ignoring this code may lead to increased emissions, which can be illegal in some areas.
• Engine should be cold.
• Vehicle should be in a controlled environment.
The EGR valve is typically located on the intake manifold or near the engine's exhaust system.
Q: Can I drive with a P1402 code?
A: It's possible to drive short distances, but it's best to fix the issue soon to avoid further engine problems.
Q: How often should the EGR valve be cleaned?
A: It's recommended to clean the EGR valve every 30,000 to 50,000 miles, depending on driving conditions.
