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P1423 EGI Functionality Test Failed

Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P1423 Information for specific makes
P1423 BUICK
P1423 CADILLAC
P1423 CHEVROLET
P1423 GMC
Posted in OBDII Powertrain(P) Codes    Tagged P1423   

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Vehicle

acura AUDI BMW buick cadillac chevrolet chrysler dodge ford gmc honda hummer hyundai infiniti ISUZU JAGUAR jeep kia lexus MAZDA MITSUBISHI nissan P0101 P0102 P0122 P0123 P0171 P0174 P0302 P0303 P0304 P0305 P0306 P0335 P0340 P0720 P1111 pontiac saturn scion SUBARU SUZUKI toyota VOLKSWAGEN VOLVO
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