Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1992CAVALIER RS, 2D CONVERTIBLE, 3.1 T, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 4 (ENGINE CONTROLS - TESTS W/CODES - 3.3L PFI)PCM/BCM CODE CHARTSCODE 44, LEAN EXHAUST INDICATIONNOTES
1992 Chevrolet Cavalier RS, 2D Convertible, 3.1 T, Standard
Code 44, Lean Exhaust Indication: Notes
1992 Chevrolet Cavalier RS, 2D Convertible, 3.1 T, StandardSECTION Notes
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 1992 Pontiac Grand Am, 1992 Oldsmobile Cutlass Cruiser, 1992 Oldsmobile Cutlass Ciera, 1992 Oldsmobile Achieva, and 1992 Buick Skylark. However, it is still accessible from the selected car via links, so may be relevant.
CODE 44 ECM TERMINAL & CKT WIRING IDENTIFICATION
| Application | ECM Terminal | Wire Color |
|---|---|---|
| O2 Signal | YE14 | Purple |
| O2 Ground | YE15 | Tan |
O2 sensor acts like an open sensor circuit and produces no voltage when exhaust temperature is less than 600°F (316°C). An open sensor circuit or cold sensor causes "open loop" operation.
NOTE:
Test number refers to number on diagnostic chart.
- Checks to see if O2 sensor is registering a lean condition. Code 44 is set when O2 sensor voltage signal at control module is low (less than .3 volt) for a precalibrated period and system is operating in "closed loop".
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.