P2046 Code - Reductant Temperature Sensor Circuit Intermittent
Quick Answer
The P2046 code indicates a fault in the reductant temperature sensor circuit, which is a crucial component of the vehicle's emissions system. Common causes include Faulty reductant temperature sensor, Corrosion or damage to sensor wiring, Electrical issues in the sensor circuit. 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
- P2046 indicates Reductant Temperature Sensor Circuit Intermittent.
- Common causes
- Common causes include Faulty reductant temperature sensor, Corrosion or damage to sensor wiring, Electrical issues in the sensor circuit.
- 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 P2046 Description
The P2046 code indicates a fault in the reductant temperature sensor circuit, which is a crucial component of the vehicle's emissions system. The reductant temperature sensor is responsible for monitoring the temperature of the diesel exhaust fluid (DEF) in the selective catalytic reduction (SCR) system, which helps reduce harmful emissions. When the sensor detects an intermittent issue in its circuit, it can lead to inaccurate temperature readings or a complete failure of the sensor, impacting the efficiency of the SCR system.
Common Causes of P2046
- Faulty reductant temperature sensor
- Corrosion or damage to sensor wiring
- Electrical issues in the sensor circuit
- ECM software or hardware problems
- Contaminated DEF affecting sensor performance
Symptoms of P2046
- Check engine light illuminated
- Reduced fuel efficiency
- Failed emissions test
- Erratic DEF temperature readings
- Engine performance issues
How to Fix P2046
- Diagnose the code using a diagnostic scanner to confirm the issue with the reductant temperature sensor circuit.
- Inspect the sensor and wiring for any visible damage or corrosion, and repair or replace as necessary.
- Check the connections and terminals in the sensor circuit for proper contact and clean them if needed.
- Clear the fault code from the ECM memory and test drive the vehicle to ensure the issue has been resolved.
- If the problem persists, consider reprogramming the ECM or seeking professional assistance for further diagnosis and repair.
Cost to Fix P2046
The typical repair costs for addressing a P2046 code related to the reductant temperature sensor circuit intermittent issue can range from $200 to $500, including parts and labor. However, 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. It's recommended to inquire about local rates to get a more accurate estimate for this particular repair. Keep in mind that rates may be higher at dealerships or in metropolitan areas, while independent shops might offer more affordable pricing.
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Code P2046 Information for Specific Makes
- P2046 Dodge — Reductant Temperature Sensor Circuit Intermittent
- P2046 Ford — Reductant Temperature Sensor Circuit Intermittent
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