The Acura Code P0842 is an error code that could indicate a wide range of issues with an Acura vehicle. This code is usually triggered when the input signal from the 2nd clutch transmission fluid pressure switch to the PCM is low when driving in 1st gear, 3rd gear, or 5th gear. The cause of this code could be a faulty 2nd clutch transmission fluid pressure switch, poor connections and loose terminals, an OP2SW wire for an intermittent short to ground, a “short” in the wire between PCM connector terminal and the 2nd clutch transmission fluid pressure switch, and even a PCM that may need to be updated with the latest software. To help identify the cause of the Acura Code P0842 and resolve it, it is important to understand the causes and potential solutions.
Causes and Solutions for Acura Code P0842
| Cause | Solution |
|---|---|
| Faulty 2nd Clutch Transmission Fluid Pressure Switch | Replace the pressure switch |
| Poor Connections and Loose Terminals at the 2nd Clutch Transmission Fluid Pressure Switch and the PCM | Tighten the connections and terminals |
| OP2SW Wire for an Intermittent Short to Ground Between the 2nd Clutch Transmission Fluid Pressure Switch and the PCM | Check and repair wire |
| “Short” in the Wire Between PCM Connector Terminal and the 2nd Clutch Transmission Fluid Pressure Switch | Replace the wire |
| PCM needs to be Updated with the Latest Software | Install the software update |
| Faulty PCM | Replace the PCM |
Faulty 2nd Clutch Transmission Fluid Pressure Switch
The Acura Code P0842 could be triggered if the 2nd clutch transmission fluid pressure switch is faulty. This switch is responsible for sending an input signal to the PCM when the vehicle is in 1st gear, 3rd gear, or 5th gear. If the switch is faulty, it could cause the code to be triggered. The solution is to replace the pressure switch.
Poor Connections and Loose Terminals
The Acura Code P0842 could also be triggered if there are poor connections and loose terminals between the 2nd clutch transmission fluid pressure switch and the PCM. This could cause the code to be triggered, and the solution is to tighten the connections and terminals.
OP2SW Wire for an Intermittent Short to Ground
The Acura Code P0842 could also be triggered if there is an OP2SW wire for an intermittent short to ground between the 2nd clutch transmission fluid pressure switch and the PCM. This could cause the code to be triggered, and the solution is to check and repair the wire.
“Short” in the Wire Between PCM Connector Terminal and the 2nd Clutch Transmission Fluid Pressure Switch
The Acura Code P0842 could also be triggered if there is a “short” in the wire between the PCM connector terminal and the 2nd clutch transmission fluid pressure switch. This could cause the code to be triggered, and the solution is to replace the wire.
PCM Needs to be Updated with the Latest Software
The Acura Code P0842 could also be triggered if the PCM needs to be updated with the latest software. This could cause the code to be triggered, and the solution is to install the software update.
Faulty PCM
The Acura Code P0842 could also be triggered if the PCM is faulty. This could cause the code to be triggered, and the solution is to replace the PCM.
Conclusion: Understanding and Resolving Acura Code P0842
The Acura Code P0842 can be triggered by a variety of causes, and it is important to understand the possible causes and potential solutions to resolve the issue. The causes could include a faulty 2nd clutch transmission fluid pressure switch, poor connections and loose terminals, an OP2SW wire for an intermittent short to ground, a “short” in the wire between PCM connector terminal and the 2nd clutch transmission fluid pressure switch, and even a PCM that may need to be updated with the latest software. To resolve the Acura Code P0842, it is important to identify the cause of the code and take the appropriate corrective action.
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