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 MANUALSCHEVROLET1995FORWARD CONTROL 4.3 Z, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - TESTS W/CODES - 4.3LTROUBLE CODE CHARTSCODE P1406, EGR VALVE PINTLE POSITION - "S" & "T" SERIES 4.3L (VIN W) (1 OF 2)NOTES
1995 Chevrolet Forward Control 4.3 Z, Automatic
Code P1406, EGR Valve Pintle Position - "S" & "T" Series 4.3L (VIN W) (1 Of 2): Notes
1995 Chevrolet Forward Control 4.3 Z, AutomaticSECTION Notes
Control module constantly monitors linear EGR valve pintle position sensor to ensure valve is responding properly to commands from control module.
NOTE:
Test numbers refer to numbers on diagnostic chart.
- Checks for an EGR valve sticking partially open or an incorrect pintle position sensor feedback signal.
- Ensures control module is capable of controlling EGR pintle position and is reading pintle position feedback signal properly.
- Checks linear EGR high and low circuits.
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.