Error code
OBD2 P0842
OBD2P0842
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Transmission Fluid Pressure Sensor/Switch 'A' Circuit Low.
Severity
moderateCan drive, but may experience shifting problems and potential transmission damage if not addressed.
Summary
P0842 indicates low input from the transmission fluid pressure (TFP) sensor A, which monitors fluid pressure in the transmission. This issue is related to the wiring or sensor circuit.
Common Causes
- Wiring issues
- Short to earth
- Faulty TFP sensor
Fixes
- Replace the faulty TFP sensor or repair wiring issues.
FAQ
What does P0842 mean?
P0842 indicates a low input from the transmission fluid pressure (TFP) sensor A, which can cause shifting problems and potential damage if ignored.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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