P1790moderate severityPowertrain
Throttle Position Signal Malfunction (from A/T)
on 2017 Honda Civic 1.5L I4 Turbo · FWD
What this code means
The transmission control system is receiving a faulty throttle position signal. This affects shift point accuracy and torque management.
Symptoms
- Erratic shifting
- Poor throttle response
- Check engine light on
Common causes
- Faulty throttle position sensor
- Damaged wiring between PCM and TCM
- Poor sensor connection
- Faulty PCM
Diagnostic steps
- Scan for stored codes
- Inspect TPS wiring and connector
- Test TPS signal voltage
- Replace sensor if out of spec
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Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1