Diagnostic trouble code P1192 is a manufacturer-specific powertrain fault code. Because it is manufacturer-specific, its exact definition depends entirely on the vehicle make, model, and application.
Exact vehicle application must be verified before diagnosis. The code identifies a detected condition in a specific subsystem, but further testing is required to identify the root cause.
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Key Takeaways
- P1192 is a manufacturer-specific code, meaning its definition varies significantly between automakers.
- On Chrysler and Jeep applications, it indicates an inlet air temperature sensor circuit low input fault.
- On Volkswagen and Audi applications, it points to a fuel pressure sensor supply voltage issue.
- On Hyundai applications, it identifies an electronic throttle system target follow malfunction.
- Diagnosis requires verifying the exact factory definition and testing the relevant sensor or throttle circuits.
P1192 Code Description and Implications
Because P1192 is manufacturer-specific, there is no single universal definition. This fault code identifies a detected condition, but the exact monitored system depends on the vehicle make and model.
Some Chrysler, Dodge, and Jeep applications: P1192 indicates an “Inlet Air Temperature Sensor Circuit Low Input” fault. The powertrain control module detects that the sensor signal voltage is lower than expected.
Some Volkswagen and Audi applications: P1192 indicates a “Fuel Pressure Sensor Supply Voltage” fault. The module detects an issue with the power supply to the fuel rail pressure sensor.
Some Hyundai applications: P1192 indicates an “Electronic Throttle System Limp Home – Target Follow Malfunction.” The module detects that the throttle actuator cannot maintain the desired position.
Common Causes of the P1192 Code
For Chrysler and Jeep applications, possible causes include a failed inlet air temperature sensor, damaged wiring or connectors in the sensor circuit, or a short to ground.
For Volkswagen and Audi applications, causes may involve a blown fuse supplying power to the fuel pressure sensor, damaged wiring, or a failed sensor.
For Hyundai applications, causes include carbon buildup in the throttle body, a failing throttle position sensor, or a malfunctioning electronic throttle actuator motor.
Symptoms Associated With P1192
On Chrysler applications, symptoms may include an illuminated Check Engine Light, rough idling, and poor cold-start performance.
On Volkswagen applications, the engine may enter a limp mode with reduced power due to the inability to monitor fuel rail pressure.
On Hyundai applications, symptoms include severely reduced power, sluggish acceleration, and an illuminated Check Engine Light as the engine enters a fail-safe mode.
Diagnosing the P1192 Trouble Code
Diagnosis must begin by confirming the exact factory definition for the specific make, model, and year.
For Chrysler applications, technicians test the inlet air temperature sensor circuit for proper voltage and ground, and compare the sensor reading to ambient temperature.
For Volkswagen applications, technicians check the relevant fuses and test the power supply circuit to the fuel pressure sensor.
For Hyundai applications, technicians inspect the throttle body for carbon buildup and test the throttle position sensor signals and actuator motor operation.
Repairing the P1192 Issue
If an inlet air temperature sensor fault is confirmed on a Chrysler application, the confirmed failed sensor or damaged wiring must be replaced or repaired.
If a supply voltage fault is confirmed on a Volkswagen application, the blown fuse, damaged wiring, or confirmed failed sensor must be repaired or replaced.
If an electronic throttle system fault is confirmed on a Hyundai application, the throttle body must be cleaned, or the confirmed failed throttle actuator or position sensor must be replaced.
Cost Considerations for P1192 Repairs
Cost depends on diagnostic time, component accessibility, required parts, programming requirements, and labor.
Replacing a temperature or pressure sensor involves standard labor times, while replacing an electronic throttle body assembly requires additional calibration and programming steps.
Prevention Strategies for Future Occurrences
Some electrical and mechanical failures cannot be reliably prevented.
On applications using electronic throttle bodies, keeping the air intake system clean and replacing the engine air filter at recommended intervals can help reduce carbon buildup on the throttle plate.
Inspecting sensor wiring for heat damage or chafing can help prevent intermittent circuit faults.
Troubleshooting Tips and Best Practices
Never assume P1192 is a universal electronic throttle code. Always verify the exact definition for the specific vehicle before purchasing parts.
Do not ignore related codes. An inlet air temperature fault may appear alongside other air metering codes, while a throttle fault may appear alongside accelerator pedal position sensor codes.
Check for technical service bulletins related to updated sensors or revised throttle body assemblies for your specific model year and engine configuration.
More OBD-II Codes
| P1191 | P1193 | P0112 | P1101 |
| P1190 | P1194 | P0113 | P1102 |
| P1189 | P1195 | P0117 | P1103 |
| P1188 | P1196 | P0118 | P1104 |
| P1187 | P1197 | P1105 | P1106 |
| P1186 | P1198 | P1107 | P1108 |
Frequently Asked Questions
Is P1192 a generic or manufacturer-specific code?
No. P1192 is a manufacturer-specific code. Its exact definition varies between automakers, so the factory service information for the specific vehicle must be consulted.
Can I drive my car with a P1192 code?
It depends on the application. If the code triggers a limp mode on a Hyundai or Volkswagen, power is severely reduced, making driving unsafe or difficult.
Will disconnecting the battery clear the P1192 code?
Disconnecting the battery may temporarily clear the code, but it does not repair the underlying electrical or mechanical fault. It also resets readiness monitors.
Can a bad intake air temperature sensor cause a P1192 code?
Yes. On specific Chrysler and Jeep applications, a failing intake air temperature sensor or a short in its circuit can trigger this low input voltage code.
Does P1192 always mean the electronic throttle body is bad?
No. While a throttle issue is a cause on specific Hyundai applications, the code indicates an air temperature sensor or fuel pressure sensor fault on other manufacturers.
What Should You Do About the P1192 Code?
Confirm the exact factory definition and diagnostic procedure for your specific vehicle application. Because P1192 is manufacturer-specific, identifying whether it relates to an air temperature sensor, a fuel pressure sensor, or an electronic throttle system is mandatory.
Follow the applicable manufacturer diagnostic steps to test the relevant system and components. Once the root cause is confirmed, complete the necessary repairs and verify that the system operates correctly and the code does not return.
