P2123
Throttle/Pedal Position Sensor/Switch D Circuit High
2007-2012 Nissan Altima 2.5L I4
Critical SeverityPowertrainGeneric (SAE)
Description
High voltage from accelerator pedal position sensor D.
Symptoms
- Limp mode
- Unintended acceleration
- Check engine light
Common Causes
- Open ground circuit
- Short to voltage
- Failed sensor
Diagnostic Steps
- Measure voltage at APP sensor D
- Check for opens in ground
- Inspect wiring
Repair Notes
Replace pedal assembly or repair wiring.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P2123 on Other Vehicles
Nissan 200SX
1995-1998 1.6L I4 GA16DE
Nissan 200SX SE-R
1995-1998 2.0L I4 SR20DE
Nissan 240SX
1995-1998 2.4L I4 KA24DE
Nissan 300ZX
1990-1996 3.0L V6 VG30DE
Nissan 300ZX Twin Turbo
1990-1996 3.0L Twin-Turbo V6 VG30DETT
Nissan 350Z
2003-2006 3.5L V6 VQ35DE
Nissan 350Z
2007-2009 3.5L V6 VQ35HR
Nissan 370Z
2009-2020 3.7L V6 VQ37VHR
Common Questions
What does code P2123 mean on a 2007-2012 Nissan Altima?
P2123 stands for "Throttle/Pedal Position Sensor/Switch D Circuit High". High voltage from accelerator pedal position sensor D.
What are the symptoms of P2123 on a Nissan Altima?
Common symptoms of P2123 include: Limp mode, Unintended acceleration, Check engine light.
What causes P2123 on a 2007-2012 Nissan Altima?
Common causes of P2123 include: Open ground circuit, Short to voltage, Failed sensor.