Chassis, generic

C0715 Power Steering Pressure Sensor Range/Performance

Check engine lightUsually off
EmissionsNot relevant
Drive cycleRequired
Limp modeNo

C0715 is not traceable in public material; the publicly available J2012 tables, the NHTSA bulletin index and maker code lists all lack it. The function it names is well known from engine diagnostics, where the same check runs as P0551. On hydraulic steering the pump pressure rises with steering effort and a switch or sensor tells the engine controller to raise idle. Mitsubishi flags the circuit when the switch stays on after a stop that follows at least 4 s above 50 km/h; Saab sets P0551 on the 9-3 when the switch state changes for 600 s above 50 km/h and keeps the higher idle meanwhile. Toyota replaced the sensor on the 2007-08 Tundra to cure circuit low and high codes. Typical results are stalling or dipping idle at full lock, or a raised idle when driving straight.

Likely causes

Pressure sensor or switch stuck or drifting
Fluid seeping into the sensor connector
Pump pressure abnormal due to low fluid or worn pump

Symptoms

  • Idle dips or engine stalls at full steering lock
  • Idle stays raised while driving straight

Repair estimate

DifficultyEasyDIY possible
Parts and labour€40–250
Time0.3–1 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

power steering pressure sensorpower steering pumpsensor wiring

Related codes

P0551P0550P0552P0553C0250

References: mitsubishitechinfo.com, saabwisonline.com, saabwisonline.com, vehicleservicepros.com.