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 of the car that helps control pollution isn't working right. It's like a switch that tells the car how to cool down the engine, but it's not doing its job properly.
The P2493 code indicates that the EGR (Exhaust Gas Recirculation) cooler bypass position sensor is not operating within its expected range or performance on bank 1 of the engine.
The EGR cooler bypass position sensor monitors the position of the EGR cooler bypass valve. This valve helps control the temperature of the exhaust gases before they re-enter the engine. If the sensor detects a position that is outside the expected range, or if the performance is not as expected, the P2493 code is triggered.
• Check Engine Light is on
• Reduced engine performance
• Increased emissions
• Faulty EGR cooler bypass position sensor
• Wiring issues or poor electrical connections
• Faulty EGR cooler bypass valve
EGR: Exhaust Gas Recirculation
OBD-II: On-Board Diagnostics, Second Generation
• Use an OBD-II scanner to confirm the code.
• Inspect the EGR cooler bypass position sensor and its wiring.
• Test the EGR cooler bypass valve for proper operation.
• Replace the EGR cooler bypass position sensor.
• Repair or replace damaged wiring or connections.
• Replace the EGR cooler bypass valve if faulty.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Ford F-Series
• Chevrolet Silverado
• Dodge Ram
• Regular maintenance of the EGR system.
• Ensure proper electrical connections.
• Use quality fuel to reduce emissions.
Sensor Issue
• Have the vehicle inspected by a professional.
• Avoid driving the vehicle extensively until repaired.
Check with the vehicle manufacturer for specific warranty coverage related to emissions components.
This code has been associated with issues in vehicles with advanced emissions control systems, particularly in diesel engines.
Moderate – It's important to address this issue to prevent increased emissions and potential engine performance problems.
Driving with a malfunctioning EGR system can lead to increased emissions, which may not comply with local environmental regulations.
• Engine at operating temperature
• Vehicle in closed-loop operation
The EGR cooler bypass position sensor is typically located near the EGR cooler, which is often found on or near the engine's exhaust manifold.
Q: What does the EGR cooler do?
A: The EGR cooler reduces the temperature of exhaust gases before they are recirculated into the engine, helping to reduce emissions.
Q: Can I drive with a P2493 code?
A: It's not recommended to drive extensively with this code, as it can lead to increased emissions and reduced engine performance.
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