OBD-II code · Powertrain (generic)

P07B7 Transmission Park Position Sensor/Switch A Circuit Intermittent/Erratic

Park position sensor A signal jumps or drops out — typically a worn switch with contact bounce or a loose connector at the shift lever module.

Is it safe to drive with P07B7?

Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.

Common causes

  • Most likelySwitch contact bounce
  • Less likelyConnector with intermittent contact under vibration
  • Less likelyHarness routed against vibrating component

Symptoms

  • Check engine or transmission warning light on
  • Harsh, delayed, or missing shifts
  • Possible limp mode (locked in one gear)
  • Slipping or shuddering during gear changes

Repair at a glance

Difficulty
Medium
DIY friendly
Best left to a mechanic
Typical labour
0.5–2 h
Emissions test
Usually unaffected
Parts involved
Park Position Sensor A

Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.