P0842 Oldsmobile Code - Transmission Fluid Pressure Sensor/Switch 'A' Circuit Low
Quick Answer
The Torque Converter Clutch (TCC) release switch is part of the automatic Transmission Fluid Pressure (TFP) manual valve position switch. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Transmission Fluid Pressure Sensor/Switch 'A'. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0842 Oldsmobile indicates Transmission Fluid Pressure Sensor/Switch 'A' Circuit Low.
- Common causes
- Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Transmission Fluid Pressure Sensor/Switch 'A'.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P0842 Oldsmobile Description
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.
What are the Possible Causes of the DTC P0842 Oldsmobile?
- 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 to Fix the DTC P0842 Oldsmobile?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
2001-2002 Oldsmobile Intrigue
2001-2003 Oldsmobile Silhouette
2001-2004 Oldsmobile Silhouette EXT
Oldsmobile Factory Service Bulletin OBDII Code P0842
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0842 Oldsmobile code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0842 Oldsmobile Code
1. What are the common symptoms of OBDII code P0842 in an Oldsmobile?
- Common symptoms include harsh shifting, transmission slippage, decreased fuel efficiency, and the transmission going into limp mode.
2. What can cause the Transmission Fluid Pressure Sensor/Switch 'A' Circuit Low code in an Oldsmobile?
- The code P0842 in an Oldsmobile can be caused by a faulty transmission fluid pressure sensor/switch, low transmission fluid level, wiring issues, or a malfunctioning transmission control module.
3. How serious is the P0842 code in an Oldsmobile?
- The P0842 code can lead to drivability issues and potential transmission damage if left unresolved. It is important to address this code promptly to prevent further damage.
4. Can I continue driving my Oldsmobile with the P0842 code?
- It is not recommended to continue driving your Oldsmobile with the P0842 code present, as it can lead to further transmission problems and potential safety hazards.
5. How do I diagnose the cause of the P0842 code in my Oldsmobile?
- Diagnosing the P0842 code typically involves checking the transmission fluid level and condition, inspecting the wiring and connectors related to the pressure sensor/switch, and testing the sensor/switch itself for proper operation.
6. Can I repair the P0842 code in my Oldsmobile myself?
- Depending on your mechanical skills and access to tools, you may be able to repair the P0842 code yourself by replacing the faulty transmission fluid pressure sensor/switch or addressing any wiring issues. However, professional diagnosis and repair are recommended for accurate and lasting solutions.
7. How much does it cost to fix the P0842 code in an Oldsmobile?
- The cost of fixing the P0842 code in an Oldsmobile can vary depending on the root cause of the issue, labor rates in your area, and whether you choose to address the problem yourself or take it to a professional mechanic. Costs may range from a few hundred to over a thousand dollars.
8. Will resetting the OBDII code P0842 make it go away permanently?
- Resetting the OBDII code P0842 may temporarily turn off the check engine light, but if the underlying issue causing the code is not fixed, it is likely to reappear. It is important to address the root cause of the problem to prevent future occurrences.
9. How long does it take to repair the P0842 code in an Oldsmobile?
- The repair time for the P0842 code in an Oldsmobile can vary depending on the complexity of the issue and the availability of parts. Simple fixes like replacing a sensor may take a few hours, while more involved repairs could take a day or more.
10. Will the P0842 code cause my Oldsmobile to fail an emissions test?
- The P0842 code itself may not cause your Oldsmobile to fail an emissions test, but it is an indication of a potential issue with the transmission that could affect emissions. It is recommended to address the code before undergoing an emissions test to ensure your vehicle passes.
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