P0689 2017 Chevrolet Silverado Code - Electronic Control Module Power Relay Sense Circuit Low
Quick Answer
The P0689 diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado indicates a problem with the Electronic Control Module (ECM) Power Relay Sense Circuit being low. Common causes include Faulty power relay, Damaged wiring or connectors in the power relay sense circuit, Malfunctioning ECM. 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
- P0689 2017 Chevrolet Silverado indicates Electronic Control Module Power Relay Sense Circuit Low.
- Common causes
- Common causes include Faulty power relay, Damaged wiring or connectors in the power relay sense circuit, Malfunctioning ECM.
- 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 P0689 2017 Chevrolet Silverado Description
The P0689 diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado indicates a problem with the Electronic Control Module (ECM) Power Relay Sense Circuit being low. The ECM is a crucial component of the vehicle's engine management system, responsible for controlling various functions such as fuel injection, ignition timing, and emissions. The power relay sense circuit is designed to monitor the voltage level of the power relay that supplies power to the ECM. When the voltage level is detected to be lower than the specified threshold, the ECM triggers the P0689 code.
Common Causes of P0689 2017 Chevrolet Silverado
- Faulty power relay
- Damaged wiring or connectors in the power relay sense circuit
- Malfunctioning ECM
- Poor electrical connection
- Corrosion or moisture in the electrical system
Symptoms of P0689 2017 Chevrolet Silverado
- Engine misfires or rough idling
- Reduced engine performance and power
- Check Engine Light illuminated on the dashboard
- Difficulty starting the vehicle
- Poor fuel efficiency
How to Fix P0689 2017 Chevrolet Silverado
- Begin by conducting a thorough inspection of the power relay, wiring, and connectors to identify any visible damage or corrosion.
- Test the power relay using a multimeter to determine if it is functioning correctly.
- Check the voltage levels in the power relay sense circuit to ensure they meet the specified threshold.
- If necessary, replace the faulty power relay, repair damaged wiring or connectors, or address any other identified issues.
- Clear the DTC using a diagnostic scan tool and test drive the vehicle to verify that the problem has been resolved.
Cost to Fix P0689 2017 Chevrolet Silverado
The typical repair costs for addressing the P0689 code on a 2017 Chevrolet Silverado can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of replacing a power relay or repairing wiring/connectors can range from $100 to $300, including parts and labor. However, if the ECM needs to be replaced, the cost can be significantly higher, potentially exceeding $500 or more. It's important to factor in diagnostic time and labor rates, which can vary between $80 and $150 per hour at most auto repair shops. For a more accurate estimate, it is recommended to consult with a qualified mechanic or dealership in your area.
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Frequently Asked Questions about P0689 2017 Chevrolet Silverado Code
1. What does the OBDII code P0689 mean for a 2017 Chevrolet Silverado?
P0689 indicates that the Electronic Control Module (ECM) Power Relay Sense Circuit is detecting a voltage lower than the expected range, which can affect the ECM's ability to function properly.
2. What are the common symptoms of code P0689 in a 2017 Chevrolet Silverado?
Common symptoms include difficulty starting the engine, intermittent stalling, poor engine performance, and the Check Engine Light being illuminated.
3. What causes the P0689 code to appear in a 2017 Chevrolet Silverado?
Possible causes include a faulty ECM power relay, damaged wiring or connectors in the ECM power relay circuit, a weak battery, or an issue with the ECM itself.
4. How do I diagnose the cause of a P0689 code in my 2017 Chevrolet Silverado?
Start by checking the battery voltage and the condition of the battery. Inspect the ECM power relay, its wiring, and connectors for damage or corrosion. Use a multimeter to test for proper voltage in the circuit.
5. Can a faulty ECM power relay cause code P0689 in a 2017 Chevrolet Silverado?
Yes, a faulty ECM power relay is a common cause of this code and should be tested and replaced if necessary.
6. Is it safe to drive a 2017 Chevrolet Silverado with the P0689 code?
Driving with this code is not recommended, as it can lead to intermittent stalling or the engine failing to start, which could be dangerous in certain situations.
7. How do I fix the P0689 code on my 2017 Chevrolet Silverado?
Repairs typically involve replacing a faulty ECM power relay, repairing or replacing damaged wiring or connectors, and ensuring the battery and ECM are functioning properly.
8. How much does it cost to fix code P0689 on a 2017 Chevrolet Silverado?
Repair costs can vary. Replacing the ECM power relay typically costs $50 to $100 for parts, plus labor. If wiring repairs or ECM replacement are needed, costs will be higher.
9. Can a weak battery trigger the P0689 code in a 2017 Chevrolet Silverado?
Yes, a weak or failing battery can cause low voltage in the ECM power relay sense circuit, triggering the P0689 code.
10. Do I need to reprogram the ECM after fixing code P0689 on my 2017 Chevrolet Silverado?
Reprogramming the ECM is generally not required unless the ECM itself is replaced. After repairs, clear the code and test the system to ensure the issue is resolved.
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