P1428 Chevrolet Code - EGR Temperature Sensor 1 Intake Air Temperature 2 Not Plausible
Quick Answer
The Exhaust Gas Recirculation (EGR) Temperature Sensors are variable resistors that measure the temperature of the exhaust gas at the inlet and outlet of the EGR cooler. Common causes include Faulty Exhaust Gas Recirculation (EGR) Temperature Sensor 1, Exhaust Gas Recirculation Temperature Sensor 1 harness is open or shorted, Exhaust Gas Recirculation Temperature Sensor 1 circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1428 Chevrolet indicates EGR Temperature Sensor 1 Intake Air Temperature 2 Not Plausible.
- Common causes
- Common causes include Faulty Exhaust Gas Recirculation (EGR) Temperature Sensor 1, Exhaust Gas Recirculation Temperature Sensor 1 harness is open or shorted, Exhaust Gas Recirculation Temperature Sensor 1 circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P1428 Chevrolet Description
The Diagnostic Trouble Code (DTC) will be set if the ECM detects that the EGR cooler temperature sensor 1 or 2 is greater than 20°C (36°F) different from Intake Air Temperature (IAT) sensor 2.
What are the Possible Causes of the DTC P1428 Chevrolet?
- Faulty Exhaust Gas Recirculation (EGR) Temperature Sensor 1
- Exhaust Gas Recirculation Temperature Sensor 1 harness is open or shorted
- Exhaust Gas Recirculation Temperature Sensor 1 circuit poor electrical connection
How to Fix the DTC P1428 Chevrolet?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1428 Chevrolet code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P1428 Chevrolet Code
1. What are the common symptoms of OBDII code P1428 in a Chevrolet related to the EGR Temperature Sensor 1 Intake Air Temperature 2 Not Plausible?
- Common symptoms include a check engine light illuminated on the dashboard, poor engine performance, rough idling, and potential fuel efficiency issues.
2. What are some possible causes of OBDII code P1428 in a Chevrolet related to the EGR Temperature Sensor 1 Intake Air Temperature 2 Not Plausible?
- Potential causes can include a faulty EGR temperature sensor, a malfunctioning intake air temperature sensor, wiring issues, or a problem with the engine control module (ECM).
3. How can I diagnose OBDII code P1428 in a Chevrolet related to the EGR Temperature Sensor 1 Intake Air Temperature 2 Not Plausible?
- Diagnosis typically involves using an OBDII scanner to read the code and then conducting a visual inspection of the sensors and their wiring. Testing the sensors for proper functionality may also be necessary.
4. Can I drive my Chevrolet with OBDII code P1428 related to the EGR Temperature Sensor 1 Intake Air Temperature 2 Not Plausible?
- It is not recommended to drive the vehicle extensively with this code present, as it can lead to further engine issues and potential damage. It is best to address the problem as soon as possible.
5. What is the typical repair process for OBDII code P1428 in a Chevrolet related to the EGR Temperature Sensor 1 Intake Air Temperature 2 Not Plausible?
- The repair process often involves replacing the faulty EGR temperature sensor or intake air temperature sensor, repairing any damaged wiring, and clearing the code from the ECM.
6. How much does it typically cost to repair OBDII code P1428 in a Chevrolet related to the EGR Temperature Sensor 1 Intake Air Temperature 2 Not Plausible?
- Repair costs can vary depending on the root cause of the issue, but they typically range from $100 to $300 for parts and labor.
7. Are there any preventive maintenance tips to avoid OBDII code P1428 related to the EGR Temperature Sensor 1 Intake Air Temperature 2 Not Plausible?
- Regularly servicing your vehicle, including checking and cleaning the EGR system components, can help prevent issues that may trigger this code.
8. Can a DIY enthusiast address OBDII code P1428 related to the EGR Temperature Sensor 1 Intake Air Temperature 2 Not Plausible?
- Depending on your skill level and access to tools, some DIY enthusiasts may be able to address this code themselves by replacing the sensors or checking the wiring. However, professional diagnosis and repair are recommended for accurate and thorough resolution.
9. How urgent is it to fix OBDII code P1428 related to the EGR Temperature Sensor 1 Intake Air Temperature 2 Not Plausible?
- While the vehicle may still be operable with this code present, it is important to address it promptly to prevent potential engine performance issues and further damage.
10. Can an OBDII scanner reset the code P1428 related to the EGR Temperature Sensor 1 Intake Air Temperature 2 Not Plausible?
- Yes, an OBDII scanner can clear the code from the ECM after the underlying issue has been addressed through repair or replacement of faulty components.
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