The GM Genuine Parts #12656543 Heated Oxygen Sensor ensures precise air-fuel ratio monitoring, compatible with heavy-duty trucks, construction machinery, agricultural vehicles, and passenger cars. As an OEM-grade replacement, it meets SAE J1939 standards and requires professional programming for seamless integration.
| Part Number | 12656543 |
|---|---|
| Compatible Brands | SHACMAN Heavy Trucks, CAT Construction Machinery, John Deere Agricultural Vehicles, GM Automotive Systems |
| Operating Voltage | 12V/24V DC |
Symptom: Error codes P0135 (Heater Circuit Malfunction) and P0171 (System Too Lean) frequently appear during cold starts.
Diagnosis: Corrosion in sensor connectors or carbon buildup from low-quality fuel.
Solution: 1) Clean electrical contacts with CRC Mass Air Flow Sensor Cleaner 2) Replace sensor using original #12656543 part 3) Program via J2534-compliant tool.
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