Transmission Fluid Pressure Sensor/Switch ‘A’ Circuit Intermittent
Table of contents
P1844 OLDSMOBILE Possible Causes
- Low transmission fluid level
- Dirty transmission fluid
- Faulty Transmission Fluid Pressure Sensor/Switch ‘A’
- Transmission Fluid Pressure Sensor/Switch ‘A’ harness or connectors
- Transmission Fluid Pressure Sensor/Switch ‘A’ circuit is open or shorted
- Transmission internal mechanical problem
How do I fix code P1844 OLDSMOBILE?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P1844 OLDSMOBILE code
The cost of diagnosing the P1844 OLDSMOBILE code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1844 OLDSMOBILE Description
The Torque Converter Clutch (TCC) release switch is part of the automatic Transmission Fluid Pressure (TFP) manual valve position switch. The TFP manual valve position switch is mounted to the transmission valve body. The TCC release switch is a normally-closed switch.
When the TCC is released, TCC release fluid pressure opens the TCC release switch which opens the TCC release pressure circuit. When the voltage on the circuit is high (switch open), the Powertrain Control Module (PCM) recognizes that the TCC is no longer engaged.
