P205B GMC Code - Reductant Tank Temperature Sensor Circuit Range/Performance
Quick Answer
The Reductant Tank Temperature Sensor is a variable resistor used to measure the temperature inside the reductant tank. Common causes include Faulty Reductant Pump and Sensor Assembly, Reductant Pump and Sensor Assembly harness is open or shorted, Reductant Pump and Sensor Assembly 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
- P205B GMC indicates Reductant Tank Temperature Sensor Circuit Range/Performance.
- Common causes
- Common causes include Faulty Reductant Pump and Sensor Assembly, Reductant Pump and Sensor Assembly harness is open or shorted, Reductant Pump and Sensor Assembly 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 P205B GMC Description
What are the Possible Causes of the DTC P205B GMC?
- Faulty Reductant Pump and Sensor Assembly
- Reductant Pump and Sensor Assembly harness is open or shorted
- Reductant Pump and Sensor Assembly circuit poor electrical connection
- Faulty Reductant Control Module
How to Fix the DTC P205B GMC?
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 P205B GMC 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 P205B GMC Code
What does the OBDII code P205B mean for GMC vehicles?
P205B indicates a problem with the reductant tank temperature sensor circuit, specifically that its range or performance is outside the expected parameters.
What are common symptoms of the P205B code?
Symptoms may include the check engine light turning on, decreased fuel efficiency, issues with the diesel exhaust fluid (DEF) system, or possible failure to meet emissions standards.
What causes the P205B code to appear?
Common causes include a faulty reductant tank temperature sensor, wiring issues such as damaged or corroded connectors, or problems with the reductant control module.
Can I still drive my GMC vehicle with the P205B code?
While the vehicle may remain drivable, ignoring this code can eventually lead to emissions system malfunctions or a reduction in engine performance.
How do I diagnose the P205B code on my GMC?
Diagnosis typically involves using an OBDII scanner, inspecting the reductant tank temperature sensor and its wiring, and testing the sensor’s functionality against manufacturer specifications.
How is the P205B code fixed?
Repairs may include replacing the reductant tank temperature sensor, repairing or replacing damaged wiring, or updating the reductant control module software if needed.
How much does it cost to repair the P205B code?
Repair costs vary but typically range from $150 to $400, depending on whether the sensor or wiring needs to be replaced and labor rates in your area.
Can a dirty or contaminated DEF tank cause the P205B code?
Yes, contamination in the DEF tank can affect sensor readings and performance, potentially triggering this code.
How can I prevent the P205B code from appearing?
Regular maintenance of the DEF system, using high-quality DEF fluid, and inspecting wiring and sensors for damage can help prevent this issue.
Will clearing the P205B code with an OBDII scanner fix the problem?
Clearing the code may temporarily remove the error, but the underlying issue needs to be addressed to prevent it from reappearing.
Discuss the causes and fixes for P205B GMC OBDII Code
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