P07B5

Transmission Park Position Sensor/Switch A Circuit Performance/Low

Transmission Generic OBD-II Medium

What it means

P07B5 means the signal from the transmission's park position sensor or switch is reading low or not matching the actual shifter position. This sensor tells the control module when the transmission is in Park, so a fault can cause a wrong gear display and, on vehicles that use it for the start interlock, may stop the engine from cranking in Park. Wiring shorts, corrosion, or a misadjusted sensor are typical causes.

Medium

Can I keep driving? Usually drivable, but the transmission may misread its position — on some vehicles this can prevent starting in park or cause a wrong gear display, so repair soon.

Common symptoms

What you'll notice

Incorrect or missing gear-position (PRNDL) display
Vehicle may not crank in Park on designs that use this signal for the start interlock
Harsh or delayed engagement when selecting a gear
Check-engine light on

Common causes

Most likely first

Misadjusted park/neutral position sensor or switchLikely
Faulty or damaged park position sensor/switch ACommon
Damaged, shorted, or corroded wiring in the sensor circuitCommon
Corrosion or a poor connection at the sensor connectorLess often
Failed transmission control module (TCM)Less often

How to diagnose & fix

Work through it in order

Read freeze-frame data and compare the sensor's reported position with the actual shifter position.
Inspect the sensor connector and wiring for damage, corrosion, or a short to ground (a common cause of a low/performance fault).
Check the sensor/switch adjustment and alignment; readjust if the signal doesn't match the selected gear.
Test the sensor's output across the range and replace it if the signal is out of spec or dropping low.
Clear the code and verify correct position readings before suspecting the TCM.

FAQ

Quick answers

Is it safe to drive with P07B5?+

Usually yes, but the transmission may misread which gear you're in and, on some vehicles, the engine may not crank in Park until the sensor is fixed.

Can I just clear P07B5?+

You can, but a wiring, adjustment, or sensor fault will set it again the next time the circuit reads low or out of range.

Related codes

Often seen with P07B5

P07B4Transmission Park Position Sensor/Switch A P07B6Transmission Park Position Sensor/Switch A P07B7Transmission Park Position Sensor/Switch A P0705Transmission Range Sensor A Circuit (PRNDL

Read & clear P07B5 yourself

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✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX