Operation CHARM: Car repair manuals for everyone.

P0121

Tests 104 - 109:




Tests 110 -112:




SYMPTOM
P-0121 TPS VOLTAGE DOES NOT AGREE WITH MAP

WHEN MONITORED
With the engine running and no MAP sensor or TP sensor trouble codes.

SET CONDITION
Engine speed must be greater than 1600 RPM for all TPS testing.

POSSIBLE CAUSES
- MAP sensor trouble code present
- TPS 5-volt supply circuit open
- TPS conn & term corr, dam, pushed out or miswired
- TPS harness or connectors intermittent defect
- TPS voltage above 1.0 volt
- TPS voltage above 3.5 volts
- TPS voltage change not smooth