97 pontiac gp code 121
glc4122
08-19-2008, 08:17 AM
yes, i replaced a new map sensor and this code 121 is showing ? what could be the problem?
BNaylor
08-19-2008, 08:21 AM
That DTC is a throttle position sensor (TPS) issue. Checkout TPS performance. Use a meter (DMM).
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