OBD Guide
ENFRDEESPT

P119D

NOx Sensor 2 Signal Circuit

P119D is an OBD-II diagnostic trouble code meaning: NOx Sensor 2 Signal Circuit. Common causes: nox 2 sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced engine power
  • Increased fuel consumption
  • Unstable engine operation
  • Dips during acceleration

Causes

  • NOx 2 sensor malfunction
  • Open or short circuit in the sensor circuit
  • Poor contact in the sensor connector
  • Contact corrosion
  • Problems with the engine control unit

How to Fix

  1. Check the integrity of the wiring to the NOx sensor 2
  2. Check the contacts in the sensor connector for corrosion
  3. Measure sensor resistance
  4. Check the reference voltage in the circuit
  5. Replace NOx 2 sensor if necessary

Related codes

P119CP119EP2200

FAQ

What does the P119D code mean?

P119D is an OBD-II diagnostic trouble code that indicates: NOx Sensor 2 Signal Circuit

What causes a P119D error code?

The most common causes of P119D include: NOx 2 sensor malfunction; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Contact corrosion.

How do I fix a P119D diagnostic trouble code?

To fix P119D: Check the integrity of the wiring to the NOx sensor 2. Check the contacts in the sensor connector for corrosion. Measure sensor resistance. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P119D?

Yes, but get it checked soon

How much does it cost to fix P119D?

The estimated repair cost for P119D is $56–167. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat