The OBD code P0843 for Honda indicates a problem with the 2nd Clutch Transmission Fluid Pressure Switch circuit.
This affects the transmission system.
Symptoms include the Engine Light being ON.
Causes can be low transmission fluid, a faulty switch, or internal transmission issues.
It is a moderate issue.
To fix, inspect wiring and connectors for damage and check switch functionality.
| Repair Importance Level | 10.0 (Out of 10) |
| Estimated Repair Time | Approximately 1.0 hour |
| Repair Difficulty Level | 10.0 (Out of 10) |
Symptoms of the Honda p0843 OBD Code
The vehicle may experience shifting issues or harsh engagements due to Honda P0843 fault code.
- Symptoms: Engine Light ON.
- Possible harsh shifting from the transmission.
- Vehicle may go into limp mode.
- Transmission may fail to engage properly.
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Causes of the Honda p0843 OBD Code
P0843 in Honda indicates a potential issue with the transmission fluid pressure sensor circuit.
- P0843 in a Honda can be caused by a low transmission fluid level.
- Dirty transmission fluid.
- A faulty 2nd Clutch Transmission Fluid Pressure Switch.
- Issues with the 2nd Clutch Transmission Fluid Pressure Switch harness or connectors.
- An open or shorted circuit in the 2nd Clutch Transmission Fluid Pressure Switch.
- Or a transmission internal mechanical problem.
Fixing Honda Error Code p0843 Step By Step
Replace the transmission fluid pressure switch in the Honda to address fault code P0843.
- To fix Honda OBDII code P0843, start by reviewing the possible causes mentioned above.
- Visually examine the wiring harness and connectors related to the transmission fluid pressure sensor switch A circuit.
- Check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
- If no issues are found with the wiring and connectors, consider replacing the transmission fluid pressure sensor switch A.
- Clear the fault codes from the vehicle’s computer using an OBDII scanner.
- Test drive the vehicle to ensure the issue has been resolved.
Cost Of Fixing Honda p0843 Fault Code
The repair for Honda fault code P0843 typically involves replacing the transmission fluid pressure sensor.
The cost to diagnose and fix a Honda OBD code P0843 typically ranges from $75 to $150, based on a 1. 0hour repair time.
Factors like shop rates and complexity can affect the final cost.
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Details of the Honda p0843 OBD Code
P0843 in a Honda indicates a transmission fluid pressure sensor/switch A circuit high.
OBD code P0843 for Honda vehicles indicates a transmission fluid pressure sensor/switch A circuit high.
This code is triggered by the Engine Control Module (ECM) when it detects an excessively high voltage signal from the transmission fluid pressure sensor/switch A.
This sensor is typically located within the transmission valve body and monitors the hydraulic pressure in the transmission.
When the voltage signal is higher than expected, it can indicate issues with the sensor itself, wiring problems, or potential transmission fluid pressure concerns.
Mechanic’s Tech Notes
Detailed information on diagnosing and repairing Honda code P0843 related to transmission fluid pressure sensor circuit A.
To diagnose and fix OBDII code P0843 in a Honda, start by checking the transmission control module (TCM) power and ground using a multimeter.
Verify TCM communication over the Controller Area Network (CAN) using a scan tool.
If the TCM does not respond, reprogramming or reflashing may be necessary.
Additionally, visually inspect the wiring harness and connectors for any damage, and ensure connector pins are not broken, bent, pushed out, or corroded.
This thorough inspection will help identify and address any issues causing the P0843 trouble code.
FAQ
Symptoms of OBD code P0843 in a Honda: Engine Light ON. Causes: Low transmission fluid, faulty 2nd Clutch Transmission Fluid Pressure Switch. Fix: Inspect wiring and connectors for damage.
OBD code P0843 in a Honda is typically caused by low transmission fluid level, dirty fluid, faulty 2nd Clutch Transmission Fluid Pressure Switch, or related wiring issues.
To fix OBD code P0843 in your Honda for Engine Light ON, check and correct low/dirty transmission fluid, inspect 2nd Clutch Transmission Fluid Pressure Switch and related components.
Wrap Up
If your Honda is displaying OBD code P0843 and experiencing shifting issues or slipping transmission, it may be caused by a faulty transmission fluid pressure sensor/switch A, low transmission fluid level, or damaged wiring/connectors in the transmission fluid pressure sensor circuit.
To address Honda OBD code P0843, check the transmission fluid level and condition, inspect the wiring and connectors related to the transmission fluid pressure sensor/switch A, and replace the sensor if necessary.
Ensure all connections are secure and free of corrosion or damage.
