Error code
OBD2 P0816
OBD2P0816
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Downshift Switch Circuit.
Severity
moderateCan drive but may experience shifting issues.
Summary
P0816 indicates an issue with the downshift switch circuit, which is part of the transmission control system.
Common Causes
- Poor wiring connection
- Faulty downshift switch
- ECM/PCM or TCM malfunction
Fixes
- Repair or replace the faulty component (downshift switch, wiring, ECM/PCM/TCM)
FAQ
What does P0816 mean?
P0816 indicates a malfunction in the downshift switch circuit of your vehicle's transmission control system.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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- P08041-4 Upshift (Skip Shift) Lamp Control Circuit
- P0805Clutch Position Sensor Circuit
- P0806Clutch Position Sensor Circuit Range/Performance
- P0807Clutch Position Sensor Circuit Low
- P0808Clutch Position Sensor Circuit High
- P0809Clutch Position Sensor Circuit Intermittent
- P0810Clutch Position Control Error
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