OBD Guide
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P159B

G Sensor Circuit Range/Performance

P159B is an OBD-II diagnostic trouble code meaning: G Sensor Circuit Range/Performance. Common causes: turbocharger pressure sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $33–89.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–89 (est.)

Symptoms

  • Reduced engine power
  • Unstable engine operation
  • Increased fuel consumption
  • Check Engine Light Illuminates
  • Possible jerking when accelerating

Causes

  • Turbocharger pressure sensor malfunction
  • Open or short circuit in the sensor circuit
  • Problems with sensor connectors
  • ECM malfunction
  • Mechanical turbocharger problems

How to Fix

  1. Check the integrity of the sensor circuit
  2. Check sensor connectors and connections
  3. Test turbocharger pressure sensor
  4. Replace sensor if necessary
  5. Check the operation of the turbocharger

Related codes

P0299P0234P0235

FAQ

What does the P159B code mean?

P159B is an OBD-II diagnostic trouble code that indicates: G Sensor Circuit Range/Performance

What causes a P159B error code?

The most common causes of P159B include: Turbocharger pressure sensor malfunction; Open or short circuit in the sensor circuit; Problems with sensor connectors; ECM malfunction.

How do I fix a P159B diagnostic trouble code?

To fix P159B: Check the integrity of the sensor circuit. Check sensor connectors and connections. Test turbocharger pressure sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P159B?

Limited driving only, diagnose soon

How much does it cost to fix P159B?

The estimated repair cost for P159B is $33–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat