P2470 2014 GMC Sierra Code - Exhaust Gas Temperature Sensor 4 Circuit Low Voltage
Quick Answer
The P2470 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates a problem with the Exhaust Gas Temperature (EGT) Sensor 4 Circuit, specifically, low voltage. Common causes include Faulty EGT Sensor 4, Wiring issues (shorts, opens, corrosion), Connector problems. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- P2470 2014 GMC Sierra indicates Exhaust Gas Temperature Sensor 4 Circuit Low Voltage.
- Common causes
- Common causes include Faulty EGT Sensor 4, Wiring issues (shorts, opens, corrosion), Connector problems.
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
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Code P2470 2014 GMC Sierra Description
The P2470 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates a problem with the Exhaust Gas Temperature (EGT) Sensor 4 Circuit, specifically, low voltage. The EGT sensor is responsible for monitoring the exhaust gas temperature, providing crucial data to the engine control module (ECM) to optimize fuel delivery and emissions. In this case, the low voltage reading from Sensor 4 suggests a potential issue with the sensor itself, wiring, or the ECM communication.
Common Causes of P2470 2014 GMC Sierra
- Faulty EGT Sensor 4
- Wiring issues (shorts, opens, corrosion)
- Connector problems
- ECM communication errors
- Exhaust system leaks or restrictions
Symptoms of P2470 2014 GMC Sierra
- Decreased fuel efficiency
- Reduced engine power
- Increased emissions
- Illuminated check engine light
- Rough idling or misfiring
How to Fix P2470 2014 GMC Sierra
- Begin by verifying the P2470 code using a diagnostic scanner and confirming the low voltage reading from EGT Sensor 4.
- Inspect the EGT Sensor 4, wiring, and connectors for any visible damage or corrosion. Replace the sensor if necessary.
- Check for exhaust leaks or restrictions that could impact EGT sensor readings.
- Clear the DTC and reset the ECM to see if the issue persists.
- Test drive the vehicle to monitor performance and ensure that the code does not reappear.
Cost to Fix P2470 2014 GMC Sierra
The typical repair costs for addressing the P2470 code on a 2014 GMC Sierra can vary depending on the specific cause of the issue. Replacement EGT sensors can range from $50 to $150, while labor costs may add another $100 to $200. Overall, the total repair cost could range from $150 to $350. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for more accurate estimates.
Tech Notes for P2470 2014 GMC Sierra
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Frequently Asked Questions about P2470 2014 GMC Sierra Code
1. What does the OBDII code P2470 mean on a 2014 GMC Sierra?
P2470 indicates a "Exhaust Gas Temperature Sensor 4 Circuit Low Voltage," meaning the sensor is detecting lower-than-expected voltage in the circuit for Exhaust Gas Temperature Sensor 4.
2. What are the common symptoms of code P2470 in a 2014 GMC Sierra?
Symptoms may include the check engine light illuminating, poor fuel efficiency, reduced engine performance, or the vehicle entering limp mode.
3. What causes the P2470 code to appear in a 2014 GMC Sierra?
Common causes include a faulty exhaust gas temperature sensor, damaged wiring or connectors, short circuits, or issues with the engine control module (ECM).
4. How do you diagnose the P2470 code in a 2014 GMC Sierra?
Diagnosis involves using an OBDII scanner to confirm the code, inspecting the sensor and its wiring for damage, checking for loose or corroded connectors, and testing the sensor's voltage output with a multimeter.
5. Can you drive a 2014 GMC Sierra with the P2470 code active?
While it may still be drivable, ignoring the issue could result in worse fuel economy, reduced performance, or potential damage to the exhaust or emissions system.
6. How do you fix the P2470 code on a 2014 GMC Sierra?
Repairs may include replacing the faulty exhaust gas temperature sensor, repairing or replacing damaged wiring, or cleaning and reconnecting corroded connectors.
7. How much does it cost to fix the P2470 code on a 2014 GMC Sierra?
The cost can vary, but replacing the exhaust gas temperature sensor typically ranges from $150 to $300, including parts and labor.
8. What tools are needed to fix the P2470 code on a 2014 GMC Sierra?
You may need an OBDII scanner, a multimeter, basic hand tools, and possibly a wiring repair kit if there is damage to the harness.
9. Can a faulty ECM cause a P2470 code in a 2014 GMC Sierra?
Yes, while less common, a malfunctioning ECM could misinterpret sensor data and trigger the code even if the sensor and wiring are functioning properly.
10. Is the P2470 code related to emissions in a 2014 GMC Sierra?
Yes, the exhaust gas temperature sensor is part of the emissions control system, and a fault in this sensor can negatively impact emissions performance.
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