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P0120 Diagnostic Trouble Code Discussion for August 2009

Throttle Position Sensor Circuit Malfunction


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Trouble Ticket Help Requests for DTC P0120
Help Request Posted
1996 Mazda 626 DX 2.0L Poor Idle Quality, Surge, Stall, MIL Lamp on VIN: 1YVGE22C7T
P0120: TP Sensor Circuit Malfunction. Hello: Another surging idle mystery vehicle. Thought for sure it was another vacuum/intake leak type of repair. No leaks found with smoke test, mirror exam or spraying with brake cleaner around intake. Removed ISC from bore and plugged with large plastic plug....
August 12, 2009
1996 Mazda 626 DX 2.0L Poor Idle Quality, Surge, Stall, MIL Lamp on VIN: 1YVGE22C7T
P0120: TP Sensor Circuit Malfunction. Hello: Another surging idle mystery vehicle. Thought for sure it was another vacuum/intake leak type of repair. No leaks found with smoke test, mirror exam or spraying with brake cleaner around intake. Removed ISC from bore and plugged with large plastic plug....
August 18, 2009
1997 Mercury Villager (Van) GS 3.0L No Start, Poor Idle Quality, Cuts out, Stall, Poor Fuel Economy, MIL Lamp on, trans VIN: 4M27V1112W
P0120: ecm/ tps reading. Vehicle is the same as a Nissan Quest. The vehicle came in with a high tps voltage constant. After searching forever, I finally found a loose ground on the intake from someone trying to install spark plugs. I was wrong problem is not fixed, now after the engin...
August 26, 2009
1996 Mazda 626 DX 2.0L Poor Idle Quality, Surge, Stall, MIL Lamp on VIN: 1YVGE22C7T
P0120: TP Sensor Circuit Malfunction. Hello: Another surging idle mystery vehicle. Thought for sure it was another vacuum/intake leak type of repair. No leaks found with smoke test, mirror exam or spraying with brake cleaner around intake. Removed ISC from bore and plugged with large plastic plug....
August 12, 2009
1996 Mazda 626 DX 2.0L Poor Idle Quality, Surge, Stall, MIL Lamp on VIN: 1YVGE22C7T
P0120: TP Sensor Circuit Malfunction. Hello: Another surging idle mystery vehicle. Thought for sure it was another vacuum/intake leak type of repair. No leaks found with smoke test, mirror exam or spraying with brake cleaner around intake. Removed ISC from bore and plugged with large plastic plug....
August 18, 2009
1997 Mercury Villager (Van) GS 3.0L No Start, Poor Idle Quality, Cuts out, Stall, Poor Fuel Economy, MIL Lamp on, trans VIN: 4M27V1112W
P0120: ecm/ tps reading. Vehicle is the same as a Nissan Quest. The vehicle came in with a high tps voltage constant. After searching forever, I finally found a loose ground on the intake from someone trying to install spark plugs. I was wrong problem is not fixed, now after the engin...
August 26, 2009