P142D Code - Exhaust Gas Recirculation Sensor 'D' Circuit Low
Quick Answer
The P142D diagnostic trouble code (DTC) refers to an issue with the Exhaust Gas Recirculation (EGR) Sensor 'D' circuit being detected as too low. Common causes include Faulty EGR Sensor 'D', Wiring issues or poor electrical connections, EGR valve stuck open or closed. 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
- P142D indicates Exhaust Gas Recirculation Sensor 'D' Circuit Low.
- Common causes
- Common causes include Faulty EGR Sensor 'D', Wiring issues or poor electrical connections, EGR valve stuck open or closed.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P142D Description
The P142D diagnostic trouble code (DTC) refers to an issue with the Exhaust Gas Recirculation (EGR) Sensor 'D' circuit being detected as too low. The EGR system is responsible for recirculating a portion of the exhaust gases back into the engine's intake manifold to reduce harmful emissions and control combustion temperatures. The EGR sensor 'D' is a crucial component that monitors the EGR system's operation and ensures that the correct amount of exhaust gas is being recirculated.
Common Causes of P142D
- Faulty EGR Sensor 'D'
- Wiring issues or poor electrical connections
- EGR valve stuck open or closed
- Carbon buildup in the EGR system
- ECM (Engine Control Module) software issues
Symptoms of P142D
- Check engine light illuminated
- Rough idling or stalling
- Reduced engine power
- Hesitation or surging during acceleration
- Increased fuel consumption
How to Fix P142D
- Retrieve the DTCs using a diagnostic scanner to confirm the P142D code.
- Inspect the EGR Sensor 'D' and its wiring for any visible damage or corrosion.
- Test the EGR Sensor 'D' using a multimeter to check for proper resistance and voltage output.
- Clean or replace the EGR valve if necessary to ensure proper operation.
- Clear the DTCs and perform a test drive to verify that the issue has been resolved.
Cost to Fix P142D
The typical repair costs for addressing the P142D code can vary depending on the specific cause of the issue. In general, replacing the EGR Sensor 'D' or cleaning the EGR valve may cost between $150 to $300, including parts and labor. However, additional diagnostic time and labor rates at auto repair shops can influence the final cost. It is advisable to consult with a professional mechanic or service center to obtain a more accurate estimate based on your vehicle's make and model.
Need more information about the P142D code?
Need more information on how to fix the P142D code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P142D code diagnosed by a professional: Find a repair shop in your area
Code P142D Information for Specific Makes
- P142D Buick — Particulate Matter Sensor Control Module Temperature Sensor 1 High Voltage
- P142D Cadillac — Particulate Matter Sensor Control Module Temperature Sensor 1 High Voltage
- P142D Chevrolet — Particulate Matter Sensor Control Module Temperature Sensor 1 High Voltage
- P142D Ford — Exhaust Gas Recirculation Sensor 'D' Circuit Low
- P142D GMC — Particulate Matter Sensor Control Module Temperature Sensor 1 High Voltage
- P142D Lincoln — Exhaust Gas Recirculation Sensor 'D' Circuit Low
- P142D Mercury — Exhaust Gas Recirculation Sensor 'D' Circuit Low
Frequently Asked Questions about P142D Code
1. What does the OBDII code P142D mean?
P142D indicates that the Exhaust Gas Recirculation (EGR) Sensor 'D' circuit is reading a voltage lower than the manufacturer-specified range.
2. What are the symptoms of code P142D?
Symptoms may include a lit check engine light, rough idling, reduced engine performance, increased fuel consumption, and possible engine hesitation or stalling.
3. What causes the P142D code?
Common causes include a faulty EGR sensor, damaged wiring or connectors in the EGR circuit, carbon buildup in the EGR valve or passages, or a malfunctioning EGR valve.
4. Can I drive with a P142D code?
Driving with a P142D code is not recommended as it can lead to reduced engine performance, increased emissions, and potential damage to other engine components over time.
5. How do I diagnose a P142D code?
Diagnosis involves using an OBDII scanner to confirm the code, visually inspecting the EGR sensor and wiring, testing the sensor's voltage output, and checking for blockages in the EGR valve or passages.
6. How can I fix the P142D code?
Repairs may include cleaning or replacing the EGR valve, repairing damaged wiring or connectors, replacing the EGR sensor, or clearing carbon buildup in the EGR system.
7. What tools are needed to fix a P142D code?
You may need an OBDII scanner, a multimeter, basic hand tools (e.g., wrenches, screwdrivers), and a cleaning solution for carbon deposits.
8. How much does it cost to fix a P142D code?
Repair costs can vary widely but typically range from $150 to $500 depending on whether the EGR valve, sensor, or wiring needs repair or replacement.
9. What happens if I ignore the P142D code?
Ignoring the code can lead to worsening engine performance, poor fuel economy, higher emissions, and potential damage to the catalytic converter or other components.
10. Can a dirty EGR valve trigger the P142D code?
Yes, carbon buildup in the EGR valve or passages can restrict airflow and cause the sensor to read low voltage, triggering the code.
Discuss the causes and fixes for P142D OBDII Code
Code P142D comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.