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 the car's computer thinks the sensor that measures how hot the exhaust is, before it goes through a special filter, is not working right. It's like a thermometer that's telling you the wrong temperature.
The code P14B5 indicates that the exhaust gas temperature sensor located in front of the diesel particulate filter on Bank 2 is reporting a voltage higher than expected, suggesting a circuit issue.
The exhaust gas temperature sensor is responsible for monitoring the temperature of the exhaust gases. In this case, the sensor located before the diesel particulate filter on Bank 2 is sending a signal to the engine control module (ECM) that is higher than the normal range. This could be due to a short circuit, an open circuit, or a faulty sensor.
• Check Engine Light illuminated
• Possible decrease in fuel efficiency
• Potential issues with vehicle emissions
• Faulty exhaust gas temperature sensor
• Wiring issues such as short or open circuits
• Faulty engine control module (ECM)
ECM: Engine Control Module
DPF: Diesel Particulate Filter
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the exhaust gas temperature sensor for proper operation.
• Replace the faulty exhaust gas temperature sensor.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Socket set
$100 - $300
Moderate
• Volkswagen Passat
• Audi A4
• BMW 3 Series
• Regular maintenance and inspections
• Ensure proper installation of sensors
• Avoid driving with known sensor issues
Sensor Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if unsure.
• Avoid prolonged driving with this issue to prevent further damage.
Check with your vehicle manufacturer for warranty coverage on emissions-related components.
This code has been associated with vehicles equipped with diesel engines, particularly those with advanced emissions control systems.
Moderate – It is important to address this issue to maintain vehicle performance and emissions standards.
Driving with a malfunctioning emissions sensor may result in failing emissions tests and could be illegal in some regions.
• Engine at operating temperature
• Vehicle running at idle
The exhaust gas temperature sensor is located in the exhaust system in front of the diesel particulate filter on Bank 2.
Q: Can I drive with a P14B5 code?
A: It's not recommended to drive for long periods with this code, as it may affect emissions and vehicle performance.
Q: How do I know if the sensor is bad?
A: A professional can test the sensor with a multimeter to determine if it's functioning correctly.
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