P2045 Code - Reductant Temperature Sensor Circuit High
Quick Answer
The reductant heater and sender assembly contains pickup tube for reductant pump module, an electric heating element, a reductant temperature sensor and an electrode type level sensor. Common causes include Faulty Reductant Temperature Sensor, Reductant Temperature Sensor harness is open or shorted, Reductant Temperature Sensor 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
- P2045 indicates Reductant Temperature Sensor Circuit High.
- Common causes
- Common causes include Faulty Reductant Temperature Sensor, Reductant Temperature Sensor harness is open or shorted, Reductant Temperature Sensor 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 P2045 Description
What are the Possible Causes of the DTC P2045?
- Faulty Reductant Temperature Sensor
- Reductant Temperature Sensor harness is open or shorted
- Reductant Temperature Sensor circuit poor electrical connection
How to Fix the DTC P2045?
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 P2045 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.
Need more information about the P2045 code?
Need more information on how to fix the P2045 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P2045 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- P2045 Dodge — Reductant Temperature Sensor Circuit High
- P2045 Ford — Reductant Temperature Sensor Circuit High
Frequently Asked Questions about P2045 Code
1. What are the common symptoms of OBDII code P2045 (Reductant Temperature Sensor Circuit High)?
The common symptoms include the malfunction indicator light (MIL) illuminating, reduced fuel efficiency, and potential issues with the vehicle's emissions system.
2. What are the possible causes of OBDII code P2045?
Possible causes of this code include a faulty reductant temperature sensor, damaged wiring or connectors in the sensor circuit, issues with the reductant temperature sensor module, or a software issue in the engine control module (ECM).
3. How serious is OBDII code P2045 (Reductant Temperature Sensor Circuit High)?
While this code may not cause immediate drivability issues, it can affect the vehicle's emissions output and overall performance. It is recommended to address the issue promptly to prevent further problems.
4. Can OBDII code P2045 be fixed without professional help?
Simple checks like inspecting the sensor wiring and connectors can be done by DIY enthusiasts. However, diagnosing and replacing the reductant temperature sensor or addressing ECM software issues may require professional assistance.
5. How can I troubleshoot OBDII code P2045 at home?
You can start by checking the sensor wiring and connectors for any visible damage. Resetting the code and monitoring if it reappears can also help determine if the issue is intermittent or persistent.
6. Is it safe to continue driving with OBDII code P2045 illuminated?
While the vehicle may still be operable, it is advisable not to ignore the warning light. Continuing to drive with the issue unresolved can lead to increased emissions, reduced fuel efficiency, and potential damage to the emissions system.
7. How much does it typically cost to repair OBDII code P2045?
The cost of repairing this code can vary depending on the underlying cause. Simple fixes like repairing wiring may cost less, while replacing the reductant temperature sensor or addressing ECM issues can be more expensive.
8. Can a faulty reductant temperature sensor cause other problems in the vehicle?
Yes, a faulty reductant temperature sensor can potentially cause issues with the vehicle's emissions system, reduce fuel efficiency, and trigger additional fault codes related to the emissions control system.
9. How long does it take to repair OBDII code P2045?
The repair time can vary based on the specific cause of the code and the complexity of the repair. Simple fixes like replacing a sensor or repairing wiring may take a few hours, while more involved repairs can take longer.
10. Will OBDII code P2045 reset on its own?
If the underlying issue causing the code is intermittent, the code may reset on its own after a certain number of drive cycles if the problem does not reoccur. However, it is still recommended to diagnose and address the root cause of the issue.
Discuss the causes and fixes for P2045 OBDII Code
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