P0685
P0685: Engine Control Module (ECM) Output Circuit Malfunction
📖 What Does P0685 Mean?
Symptoms
- • Engine light on
- • rough engine idle
- • poor engine performance
- • decreased fuel efficiency
Common Causes
- • Faulty ECM output circuit
- • damaged or corroded wiring
- • blown fuse
- • ECM failure
Possible Solutions
1. Check the ECM output circuit wiring for damage or corrosion and repair or replace as needed. 2. Check the fuse box for blown fuses and replace as needed. 3. If the issue persists, replace the ECM.
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❓ Common Questions About P0685
Can I drive with code P0685?
You can drive for a short time, but should address code P0685 soon to avoid worsening the problem or failing an emissions test.
How much does it cost to fix P0685?
The estimated repair cost for code P0685 is between $100 and $500. This includes parts and labor for most makes and models.
Is this code easy to fix myself?
This repair is considered moderate. It may require specialized tools or significant disassembly. Professional help is recommended if you aren't an experienced DIYer.
Required Parts
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View Best Sellers ↗Related Diagnostic Codes
Other codes that may appear with P0685
P0683: Engine Control Module (ECM) Output Circuit Malfunction
P0684: Engine Control Module (ECM) Output Circuit Malfunction
P0686: Engine Control Module (ECM) Output Circuit Malfunction
P0687: Engine Control Module (ECM) Output Circuit Malfunction
💡 Why These Codes Are Related:
- • Similar Issues: Same root cause or component failure
- • Related Problems: Often occur together due to system interactions
- • Sequential Codes: Progressive failure stages or multiple sensors
- • Same System: Components within the same automotive system