OBD Guide
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P1901

Turbine Shaft Speed Sensor Circuit Intermittent

P1901 is an OBD-II diagnostic trouble code meaning: Turbine Shaft Speed Sensor Circuit Intermittent. Common causes: damage to wiring or connectors, turbine speed sensor malfunction. Estimated repair cost: $33–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$33–89 (est.)

Symptoms

  • Unstable engine operation
  • Power reduction
  • Increased fuel consumption
  • Check engine light comes on
  • Noises from the turbocharger

Causes

  • Damage to wiring or connectors
  • Turbine speed sensor malfunction
  • ECU problems
  • Short circuit in the circuit
  • Poor contact in connectors

How to Fix

  1. Check the integrity of wiring and connectors
  2. Test turbine speed sensor
  3. Check the operation of the turbocharger
  4. Replace sensor if necessary
  5. Clean or replace damaged connectors

Error P1901 by Vehicle Brand

FordLincolnMazdaMercuryNissan

FAQ

What does the P1901 code mean?

P1901 is an OBD-II diagnostic trouble code that indicates: Turbine Shaft Speed Sensor Circuit Intermittent

What causes a P1901 error code?

The most common causes of P1901 include: Damage to wiring or connectors; Turbine speed sensor malfunction; ECU problems; Short circuit in the circuit.

How do I fix a P1901 diagnostic trouble code?

To fix P1901: Check the integrity of wiring and connectors. Test turbine speed sensor. Check the operation of the turbocharger. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1901?

Yes, but get it checked soon

How much does it cost to fix P1901?

The estimated repair cost for P1901 is $33–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat