P208C Cadillac Code - Reductant Pump Control Circuit Low Voltage
Quick Answer
The selective catalytic reduction system reduces Oxides of Nitrogen (NOx) emissions by injecting a metered amount of reductant into the exhaust gas stream entering the selective catalytic reduction catalyst. 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
- P208C Cadillac indicates Reductant Pump Control Circuit Low Voltage.
- 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 P208C Cadillac Description
What are the Possible Causes of the DTC P208C Cadillac?
- 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 P208C Cadillac?
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 P208C Cadillac 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 P208C Cadillac Code
1. What does the OBDII code P208C mean on a Cadillac?
P208C indicates a low voltage condition in the reductant pump control circuit, which is part of the diesel exhaust fluid (DEF) system responsible for reducing emissions.
2. What are the common symptoms of code P208C on a Cadillac?
Symptoms may include the check engine light turning on, reduced engine performance, increased emissions, and possible DEF system warnings.
3. What causes the P208C code to appear on a Cadillac?
Common causes include a faulty reductant pump, damaged wiring or connectors in the control circuit, a blown fuse, or a defective reductant pump control module.
4. Can I drive my Cadillac with the P208C code?
While it may be possible to drive, continued operation with this code can lead to reduced performance, increased emissions, and potential damage to the DEF system.
5. How do I diagnose the P208C code on a Cadillac?
Start by checking the wiring and connectors for damage or corrosion, inspect the reductant pump, and test the voltage in the control circuit using a multimeter.
6. How do I fix the P208C code on a Cadillac?
Repairs may include replacing a faulty reductant pump, repairing or replacing damaged wiring, cleaning corroded connectors, or replacing the reductant pump control module.
7. How much does it cost to fix the P208C code on a Cadillac?
Repair costs can vary, but replacing a reductant pump typically costs $500–$1,000, while wiring repairs may range from $100–$300, depending on the extent of damage.
8. Can a bad battery cause the P208C code on a Cadillac?
Yes, a weak or failing battery can lead to low voltage in the reductant pump control circuit and trigger the P208C code.
9. Will clearing the P208C code fix the problem?
Clearing the code will temporarily turn off the check engine light, but the underlying problem must be addressed to prevent the code from returning.
10. Does the P208C code affect emissions testing for my Cadillac?
Yes, the P208C code can cause your vehicle to fail an emissions test due to the DEF system’s inability to properly reduce emissions.
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