Faulty EGR boost or pressure sensor.; Damaged or corroded wiring or connector at the sensor.; Clogged or restricted EGR passage or tube, causing incorrect pressure readings.; Leaking or disconnected vacuum hose to the EGR sensor or EGR valve.; Failed EGR valve or solenoid affecting pressure sensor readings.; PCM software issue or internal fault (rare).

DTC codes / Kia codes / P1195

P1195 · KiaEGR Boost Or Pressure Sensor Circuit Fault

Q: What does code P1195 mean?

EGR Boost Or Pressure Sensor Circuit Fault. P1195 on Kia vehicles indicates that the powertrain control module (PCM) has detected an electrical fault in the exhaust gas recirculation (EGR) boost or pressure sensor circuit, which monitors EGR flow and pressure. The PCM compares the sensor signal to expected values and sets this code when the voltage is out of range or inconsistent with other engine parameters.

P1195 on Kia vehicles indicates that the powertrain control module (PCM) has detected an electrical fault in the exhaust gas recirculation (EGR) boost or pressure sensor circuit, which monitors EGR flow and pressure. The PCM compares the sensor signal to expected values and sets this code when the voltage is out of range or inconsistent with other engine parameters.

SystemPowertrain

Code typeKia specific

SeverityMedium

Fix difficultyIntermediate

AreaFuel and air metering

Symptoms you may notice

Illumination of the check engine light, often with no other noticeable symptoms.
Rough idle or stumbling, especially when the engine is cold.
Reduced engine performance or hesitation during acceleration.
Increased exhaust emissions, which may cause a failed emissions test.
Occasional engine ping or knock due to improper EGR flow.
Poor fuel economy in some cases.

Common causes, most likely first

Faulty EGR boost or pressure sensor.
Damaged or corroded wiring or connector at the sensor.
Clogged or restricted EGR passage or tube, causing incorrect pressure readings.
Leaking or disconnected vacuum hose to the EGR sensor or EGR valve.
Failed EGR valve or solenoid affecting pressure sensor readings.
PCM software issue or internal fault (rare).

How to diagnose and fix it

Use an OBD-II scanner to retrieve the code and check for related freeze-frame data.
Inspect the EGR pressure sensor and its wiring for visible damage, corrosion, or loose connections.
Test the sensor's reference voltage and signal voltage with a multimeter, comparing to manufacturer specifications.
Check the EGR passages and tube for carbon buildup or blockage; clean or replace as needed.
Verify vacuum hoses for leaks or disconnection and repair or replace them.
Test the EGR valve operation and replace if faulty.
If all components test good, reprogram or replace the PCM as a last resort.

Before replacing the EGR pressure sensor

A clogged EGR passage can mimic a faulty sensor by causing pressure readings outside the expected range, so always inspect the passages before condemning the sensor.
Corroded or chafed wiring near the EGR sensor is a common cause on older Kia models, especially where the harness rubs against the engine block.
The code can be set by a vacuum leak that affects EGR operation, so a smoke test of the intake and vacuum system is a wise diagnostic step.
Some Kia models use a combined EGR pressure and temperature sensor; a fault in the temperature element can also trigger P1195, so test both functions.
After repairs, the PCM may require a relearn procedure or a drive cycle to clear the code and verify the fix.

Can I keep driving with P1195?

You can usually continue driving with P1195, but avoid heavy acceleration or prolonged idling until the fault is repaired, as improper EGR operation can increase emissions and may lead to engine knock or reduced performance.

Tools that help

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Guidance is general and written for Kia vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.