P205A GMC Code - Reductant Tank Temperature Sensor Circuit
Quick Answer
The P205A diagnostic trouble code (DTC) for GMC vehicles refers to the Reductant Tank Temperature Sensor Circuit. Common causes include Faulty reductant tank temperature sensor, Wiring or connector issues in the sensor circuit, Corrosion or damage to the sensor. 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
- P205A GMC indicates Reductant Tank Temperature Sensor Circuit.
- Common causes
- Common causes include Faulty reductant tank temperature sensor, Wiring or connector issues in the sensor circuit, Corrosion or damage to the sensor.
- 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.
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Code P205A GMC Description
The P205A diagnostic trouble code (DTC) for GMC vehicles refers to the Reductant Tank Temperature Sensor Circuit. This code indicates that there is a malfunction in the circuit that monitors the temperature of the reductant tank in the vehicle's selective catalytic reduction (SCR) system. The reductant tank temperature sensor plays a crucial role in ensuring that the correct amount of diesel exhaust fluid (DEF) is injected into the exhaust stream to reduce harmful emissions.
Common Causes of P205A GMC
- Faulty reductant tank temperature sensor.
- Wiring or connector issues in the sensor circuit.
- Corrosion or damage to the sensor.
- Software or calibration issues in the engine control module (ECM).
- Exposure to extreme temperatures or environmental factors.
Symptoms of P205A GMC
- Check engine light illuminated on the dashboard.
- Reduced fuel efficiency.
- Failed emissions test.
- Rough idling or hesitation during acceleration.
- Increased NOx emissions.
How to Fix P205A GMC
- Begin by using a diagnostic scan tool to retrieve the DTC and confirm the presence of the P205A code.
- Inspect the reductant tank temperature sensor and its wiring for any visible damage or corrosion.
- Test the sensor's resistance and voltage output to determine if it is functioning correctly.
- Replace the reductant tank temperature sensor if it is found to be faulty.
- Clear the DTC and perform a test drive to verify that the issue has been resolved.
Cost to Fix P205A GMC
The typical repair costs for addressing the P205A code related to the Reductant Tank Temperature Sensor Circuit can range from $150 to $400, including parts and labor. It's important to note that the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It's advisable to check local rates for a more precise estimate.
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