can any one please tell me wot the error code 21 is and how to fix it please

Reece Lower

Asked by Jan 27, 2013 at 12:04 AM about the 1999 Nissan Skyline

Question type: Maintenance & Repair

recently i waz driving my car and the engine check light came on, i hve tried usuing a scan tool but that wouldn't wrk so i
used a bit of wire and bridged the plug and counted the flashes. i am currently not driving the car in case i cause any major

3 Answers


Code 21 - (TPS high voltage) indicates a problem with the Throttle Position Sensor. Check for a sticking or misadjusted TPS plunger.


Found another that says O2 sensor - Main Heated Oxygen Sensor Signal - Open or short in heater circuit of main heated oxygen sensor

Reece Lower

cheers for that

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