P1121
Throttle Position Lower Than Expected
2003-2008 Honda Pilot 3.5L V6
Moderate SeverityPowertrain
Description
The TPS reading is lower than expected for current conditions.
Symptoms
- CEL
- Poor acceleration
- Stumbling
- Erratic idle
- Limp mode
Common Causes
- Faulty TPS
- Sticking throttle
- Carbon buildup
- Damaged wiring
Diagnostic Steps
- Monitor TPS with scan tool
- Clean throttle body
- Inspect wiring
- Test TPS
Repair Notes
Clean throttle body or replace TPS.
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
P1121 on Other Vehicles
Common Questions
What does code P1121 mean on a 2003-2008 Honda Pilot?
P1121 stands for "Throttle Position Lower Than Expected". The TPS reading is lower than expected for current conditions.
What are the symptoms of P1121 on a Honda Pilot?
Common symptoms of P1121 include: CEL, Poor acceleration, Stumbling, Erratic idle, Limp mode.
What causes P1121 on a 2003-2008 Honda Pilot?
Common causes of P1121 include: Faulty TPS, Sticking throttle, Carbon buildup, Damaged wiring.