2002 Jeep Grand Cherokee P0932 and P0123 Fault Codes: Diagnosis and Fixes
I'm experiencing two diagnostic trouble codes on my 2002 Jeep Grand Cherokee: P0932 (Line Pressure Sensor Malfunction) and P0123 (Throttle Position Sensor Voltage Too High). The vehicle shows inconsistent performance, especially under acceleration. The TPS sensor reading is stuck at 17% even when the accelerator is fully depressed. I've tried basic maintenance steps like changing the coolant, transmission fluid, and filter, but the issue persists. Can anyone confirm if these codes are related or if they point to separate problems? Any guidance on how to properly diagnose and fix this would be greatly appreciated.
The P0932 code indicates a line pressure sensor malfunction in the transmission, while P0123 points to an incorrect throttle position sensor (TPS) voltage reading. I've noticed my TPS percentage is stuck at 17% even when fully accelerating—this suggests a faulty TPS sensor or wiring issue. I've already replaced the coolant and transmission fluid, but the problem remains. What steps should I take next? Should I replace the TPS sensor or check for electrical interference?