P142A Cadillac Code - EGR Temperature Sensor 2 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 2, Exhaust Gas Recirculation Temperature Sensor 2 harness is open or shorted, Exhaust Gas Recirculation Temperature Sensor 2 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
- P142A Cadillac indicates EGR Temperature Sensor 2 Intake Air Temperature 2 Not Plausible.
- Common causes
- Common causes include Faulty Exhaust Gas Recirculation (EGR) Temperature Sensor 2, Exhaust Gas Recirculation Temperature Sensor 2 harness is open or shorted, Exhaust Gas Recirculation Temperature Sensor 2 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 P142A Cadillac 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 P142A Cadillac?
- Faulty Exhaust Gas Recirculation (EGR) Temperature Sensor 2
- Exhaust Gas Recirculation Temperature Sensor 2 harness is open or shorted
- Exhaust Gas Recirculation Temperature Sensor 2 circuit poor electrical connection
How to Fix the DTC P142A Cadillac?
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 P142A Cadillac 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 P142A Cadillac Code
1. What are the common symptoms of OBDII code P142A in a Cadillac related to the EGR Temperature Sensor 2 Intake Air Temperature 2 Not Plausible?
- Common symptoms include rough idling, decreased fuel efficiency, and potential engine stalling.
2. What are the possible causes of OBDII code P142A in a Cadillac?
- The code P142A in a Cadillac can be triggered by a faulty EGR temperature sensor, a problem with the intake air temperature sensor, or issues with the EGR system.
3. How can I diagnose the OBDII code P142A in a Cadillac?
- Diagnosing the code may involve using an OBDII scanner to read the code, checking the EGR and intake air temperature sensor connections, and inspecting for any visible damage.
4. Can a dirty EGR valve cause the OBDII code P142A in a Cadillac?
- Yes, a dirty or clogged EGR valve can affect the EGR system's performance and potentially trigger the P142A code in a Cadillac.
5. Is it safe to continue driving with the OBDII code P142A in a Cadillac?
- It is not recommended to drive with the P142A code unresolved, as it can lead to further engine issues and potential damage if left unattended.
6. How can I repair the OBDII code P142A related to the EGR Temperature Sensor 2 Intake Air Temperature 2 Not Plausible in a Cadillac?
- Repairing the issue may involve replacing the faulty EGR temperature sensor, intake air temperature sensor, or addressing any underlying EGR system problems.
7. Are there any DIY tips for fixing the OBDII code P142A in a Cadillac?
- DIY enthusiasts can attempt to clean the EGR valve, check and clean sensor connections, or replace sensors themselves if they have the necessary tools and knowledge.
8. Can a mechanic reset the OBDII code P142A without fixing the underlying issue in a Cadillac?
- While a mechanic can clear the code, it is crucial to address the root cause of the problem to prevent the code from reappearing and potentially causing further damage.
9. How much does it typically cost to repair the OBDII code P142A in a Cadillac at a professional auto repair shop?
- The cost of repairing the P142A code can vary depending on the extent of the issue, but it may range from $200 to $500, including parts and labor.
10. What steps can I take to prevent the OBDII code P142A from occurring in my Cadillac in the future?
- Regular maintenance, including checking and cleaning EGR components, monitoring sensor performance, and addressing any warning signs promptly, can help prevent the recurrence of the P142A code.
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