P0674
P0674: Engine Control Module (ECM) Output Circuit Malfunction
📖 What Does P0674 Mean?
Symptoms
- • Engine misfires
- • rough idle
- • decreased power
- • and decreased fuel efficiency
Common Causes
- • Faulty ECM output circuit
- • faulty wiring
- • or a blown fuse
Possible Solutions
1. Check the ECM output circuit for any signs of damage or corrosion. 2. Inspect the wiring and connectors for any signs of damage or corrosion. 3. Check the fuse box for any blown fuses. 4. If the issue persists, replace the ECM output circuit.
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❓ Common Questions About P0674
Can I drive with code P0674?
You can drive for a short time, but should address code P0674 soon to avoid worsening the problem or failing an emissions test.
How much does it cost to fix P0674?
The estimated repair cost for code P0674 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 P0674
P0672: Computer Output Circuit Malfunction
P0673: Computer Output Circuit Malfunction
P0675: Engine Control Module (ECM) Output Circuit Malfunction
P0676: 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