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P0502 Diagnostic Trouble Code Discussion for April 2006

VSS Circuit Low Input

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Trouble Ticket Help Requests for DTC P0502
Help Request Posted
2000 Isuzu Rodeo LS 3.2L MIL Lamp on, SPEEDOMETER INOP VIN: 4S2DM58WXY
P0502: Vehicle Speed Sensor Circuit Low Input. customer went t a/z for diag,he brought me a vss to put in.hate putting in customer parts but here goes.still speedo did not work.had good power on red/black,poor ground on black.found e30(on intake near egr)and cleaned.still no speed in dash or on scan tool.c...
April 19, 2006
2001 Pontiac Grand Am SE 2.4L Misfire, MIL Lamp on, HIGH IDLE VIN: 1G2NE52T31
P0502: Vehicle speed Circuit Low Input. ... fault codes P0300,P0302,P0502.I have an intermittent slight misfire at idle only; that i can feel. I have verified misfire counts present with scan tool on cylinder 2. My fuel trims look good with no vacuum leaks. The idle is constantly high at 1200 rpm. I...
April 19, 2006