What Does P0095 Mean?
The ECM has detected a general circuit malfunction in the intake air temperature (IAT) sensor 2 circuit on bank 1. IAT sensor 2 is typically located downstream of the intercooler on turbocharged/supercharged engines and measures the temperature of the air entering the intake manifold. A faulty reading can cause incorrect fuel injection calculations. The driver may notice poor performance, rough idle, or reduced fuel economy.
Common Causes
30%
Faulty IAT sensor 2 with drifted or failed thermistor element
25%
Damaged or corroded electrical connector at the IAT sensor 2
25%
Wiring harness damage between the ECM and IAT sensor 2
12%
Poor ground or reference voltage issue at the ECM
8%
Intake air leak between the intercooler and throttle body affecting sensor readings
Diagnostic Steps
1
Monitor the IAT sensor 2 PID value with the engine cold (overnight soak). It should read within 5-10 degrees of ambient temperature. A fixed reading of -40F or 300F+ indicates an open or shorted circuit.
2
Disconnect the IAT sensor 2 connector and measure sensor resistance. Compare to the manufacturer's temperature-resistance chart. Typical NTC thermistor: ~5,000-10,000 ohms at 68F (20C).
3
Check for 5V reference voltage and good ground at the sensor harness connector (sensor unplugged). Missing reference voltage indicates a wiring issue or ECM problem.
4
Inspect the connector for corrosion, pushed-back pins, or moisture intrusion. The intercooler area can be subject to moisture from condensation.
5
Wiggle-test the wiring harness while monitoring the IAT sensor 2 PID. Erratic jumps in the reading indicate an intermittent connection in the harness.
Estimated Repair Cost
$50 - $250
Parts + labor, varies by vehicle and location
The ECM has detected a general circuit malfunction in the intake air temperature (IAT) sensor 2 circuit on bank 1. IAT sensor 2 is typically located downstream of the intercooler on turbocharged/supercharged engines and measures the temperature of the air entering the intake manifold. A faulty readi...
The most common cause of P0095 (Intake Air Temperature Sensor 2 Circuit Bank 1) is: Faulty IAT sensor 2 with drifted or failed thermistor element
Typical repair costs for P0095 range from $50 to $250, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to drive. The ECM will use a default substitute value for IAT, which may result in slightly rich or lean fuel mixture and reduced performance. On turbocharged vehicles, the ECM may limit boost as a protective measure. No immediate safety hazard.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0095 to identify the root cause.
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Quick Info
Category
Powertrain
System
Engine Management / Sensor System
Difficulty
Type
Generic (SAE)
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