P0603 2017 Chevrolet Silverado Code - Control Module Long Term Memory Reset
Quick Answer
This diagnostic applies to internal microprocessor integrity conditions within the Engine Control Module (ECM). Common causes include Low battery voltage, Reprogram Engine Control Module (ECM), Faulty Engine Control Module. 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
- P0603 2017 Chevrolet Silverado indicates Control Module Long Term Memory Reset.
- Common causes
- Common causes include Low battery voltage, Reprogram Engine Control Module (ECM), Faulty Engine Control Module.
- 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 P0603 2017 Chevrolet Silverado Description
What are the Possible Causes of the DTC P0603 2017 Chevrolet Silverado?
- Low battery voltage
- Reprogram Engine Control Module (ECM)
- Faulty Engine Control Module
- Engine Control Module harness is open or shorted
- Engine Control Module circuit poor electrical connection
How to Fix the DTC P0603 2017 Chevrolet Silverado?
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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0603 2017 Chevrolet Silverado 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 P0603 2017 Chevrolet Silverado Code
1. What does the OBDII code P0603 mean on a 2017 Chevrolet Silverado?
P0603 indicates an issue with the Control Module Long Term Memory Reset, meaning the ECM (Engine Control Module) has detected a problem with its internal memory or power supply.
2. What are the common symptoms of code P0603 in a 2017 Silverado?
Symptoms may include the check engine light turning on, intermittent stalling, poor engine performance, or loss of stored settings like idle calibration.
3. What causes the P0603 code in a Chevrolet Silverado?
This code is commonly caused by a weak or failing battery, corroded battery terminals, faulty ECM, loose wiring connections, or aftermarket performance tuners.
4. Can a low battery cause the P0603 code?
Yes, a weak or discharged battery can lead to insufficient power for the ECM, causing the P0603 code to appear.
5. How do I fix the P0603 code on my 2017 Silverado?
Start by checking the battery and charging system. Clean or replace corroded battery terminals, inspect wiring connections, and ensure the ECM has a stable power supply. If the issue persists, the ECM may need reprogramming or replacement.
6. Can an aftermarket tuner trigger the P0603 code?
Yes, aftermarket performance tuners or modifications can interfere with the ECM's memory and trigger the P0603 code.
7. Is it safe to drive with the P0603 code on my Silverado?
While the vehicle may still run, it could experience intermittent issues like stalling or performance problems. It’s best to address the issue promptly to avoid further complications.
8. How much does it cost to fix the P0603 code on a 2017 Chevrolet Silverado?
The cost varies depending on the root cause. Battery or wiring fixes may cost $50–$200, while ECM replacement or reprogramming can range from $300–$1,000.
9. Will disconnecting the battery clear the P0603 code?
Disconnecting the battery might temporarily clear the code, but it will return if the underlying issue is not resolved.
10. Can a faulty alternator cause the P0603 code?
Yes, a malfunctioning alternator can lead to inconsistent voltage levels, which may affect the ECM's memory and trigger the P0603 code.
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