P1193 is a manufacturer-specific powertrain diagnostic trouble code, meaning its exact definition depends entirely on the vehicle application. It most commonly indicates an intake air temperature sensor fault, a fuel pressure sensor issue, or an electronic throttle system malfunction.
Because this code is manufacturer-specific, you must verify the exact factory definition for your vehicle before beginning diagnosis. The code identifies a detected condition and does not automatically prove that a specific sensor or control module has failed.
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Key Takeaways
- P1193 is a manufacturer-specific code with different definitions depending on the vehicle make and system architecture.
- On certain Chrysler, Dodge, and Jeep applications, it indicates an Inlet Air Temperature (IAT) sensor circuit high voltage condition.
- On specific VW and Audi applications, it points to a fuel pressure sensor open circuit or short to positive.
- On some Hyundai and Kia applications, it indicates an electronic throttle system limp home fault.
- Diagnosis requires verifying the exact factory definition and testing the relevant circuits using manufacturer service information.
P1193 Code Description and Implications
P1193 is a manufacturer-specific powertrain code, meaning its exact definition depends entirely on the vehicle application.
Certain Chrysler, Dodge, and Jeep applications: The code indicates an Inlet Air Temperature (IAT) Sensor Circuit High Condition. The powertrain control module detected the IAT sensor signal voltage is higher than expected, often indicating an open circuit.
Certain VW, Audi, and Skoda applications: P1193 indicates a Fuel Pressure Sensor (G247) Open Circuit or Short to Positive. The control module detected an electrical fault in the high-pressure fuel rail sensor circuit.
Certain Hyundai and Kia applications: The code points to an Electronic Throttle System (ETS) Limp Home fault. The control module detected a throttle actuator or pedal position sensor failure, forcing a reduced-power mode.
Certain Honda and Acura applications: P1193 indicates a Fuel Tank Pressure Sensor Circuit High Voltage, pointing to an electrical fault in the EVAP system pressure sensor.
Because the code identifies a monitored system condition, it does not automatically prove that the sensor or throttle body has failed. You must verify the exact factory definition before attempting repairs.
It is vital to address these trouble codes promptly using the correct service information.
Common Causes of the P1193 Code
The underlying cause depends on which system the code monitors on your specific vehicle.
For IAT and fuel tank pressure sensor applications:
- An internally failed sensor element.
- Damaged, chafed, or broken wiring in the sensor harness.
- Corroded or loose electrical connectors.
For fuel pressure sensor applications:
- A failed high-pressure fuel rail sensor.
- An open circuit or short to voltage in the sensor wiring.
- Poor ground connections at the sensor or control module.
For electronic throttle applications:
- A failing electronic throttle body assembly or internal motor fault.
- Damaged wiring or poor connections at the throttle position sensor.
- A faulty accelerator pedal position sensor providing conflicting data.
Symptoms Associated With P1193
Symptoms vary based on the monitored system and the severity of the fault.
IAT and fuel pressure sensor applications: You may notice an illuminated check engine light, poor fuel economy, or rough engine performance due to incorrect fuel mixture calculations. The vehicle may otherwise drive normally.
Electronic throttle applications: You will likely experience a severe loss of power, a flashing or steady warning light, and the vehicle entering a protective limp mode with restricted acceleration.
MIL behavior varies by application. Some vehicles illuminate the warning light immediately upon detecting the fault, while others may require multiple drive cycles.
Diagnosing the P1193 Trouble Code
Diagnosis must begin by confirming the exact factory definition for your make, model, year, and engine.
Retrieve the code and any accompanying codes using a scan tool.
For sensor circuit applications, use a multimeter to measure the sensor signal voltage and resistance. Check the related wiring for an open circuit or short to power.
For electronic throttle applications, monitor throttle position sensor live data while slowly depressing the pedal. Inspect the throttle body connector and wiring for damage or corrosion.
Never replace components based solely on the presence of the code. Confirm the exact circuit or mechanical failure before proceeding.
Repairing the P1193 Issue
Repairs must follow confirmed electrical or mechanical diagnosis.
If testing confirms a failed sensor element or an open circuit in the signal wire, replace the affected sensor with a component meeting the correct vehicle specification. Repair any damaged wiring.
If the electronic throttle body fails the manufacturer actuation or resistance tests, replace the throttle body assembly. Clean any corroded connectors before installation.
If all wiring and components test correctly, the manufacturer diagnostic procedure may direct further testing of the control module. Follow the applicable module service procedure only after strict confirmation.
Cost Considerations for P1193 Repairs
Exact repair costs depend heavily on the root cause, component accessibility, and your vehicle’s specific application.
Replacing an intake air temperature sensor involves minimal parts and labor, while replacing a high-pressure fuel sensor or an entire electronic throttle body assembly requires more labor and potential programming.
Cost depends on diagnostic time, component accessibility, required parts, programming requirements, and labor.
Prevention Strategies for Future Occurrences
Electrical circuit and throttle system faults are often difficult to predict, but some practices can help identify developing issues.
Inspecting exposed engine wiring can help identify developing damage from heat, vibration, or chafing before it causes an open circuit in critical sensor or throttle harnesses.
Keeping electrical connector seals intact and ensuring harness clips are properly secured may reduce moisture intrusion and corrosion in sensor and throttle control circuits.
Troubleshooting Tips and Best Practices
Always consult the exact manufacturer service information for your vehicle before testing circuits or replacing high-current components like an electronic throttle body.
Do not assume a general fuel delivery issue or a bad mass airflow sensor is the primary cause of P1193 without verifying the specific definition for your make and model.
On sensor circuit applications, ensure you are measuring the correct signal wire and reference voltage to avoid misdiagnosing a simple open circuit as a failed control module.
If your vehicle is subject to an applicable technical service bulletin regarding sensor calibration or wiring harness overlays, verify its applicability before replacing hardware.
More OBD-II Codes
| P1192 | P1191 | P1190 | P1189 |
| P1188 | P1187 | P1194 | P1195 |
| P1196 | P1197 | P1198 | P1199 |
| P0113 | P0112 | P0453 | P0452 |
| P0087 | P0455 | P1201 | P1202 |
| P1203 | P1204 | P1205 | P1206 |
Frequently Asked Questions
Is the P1193 code generic or manufacturer-specific?
No. P1193 is a manufacturer-specific code. Its exact definition depends on the vehicle make, commonly indicating an intake air temperature sensor fault, a fuel pressure sensor issue, or an electronic throttle system problem.
Can a P1193 code put my vehicle in limp mode?
On applications where P1193 indicates an electronic throttle system fault, the control module will typically command a reduced-power limp mode to protect the engine and ensure driver safety.
Will P1193 cause my engine to run poorly?
On applications where P1193 indicates an intake air temperature or fuel pressure sensor fault, the engine may run poorly or experience reduced fuel economy due to incorrect fuel mixture calculations.
Can I clear the P1193 code by disconnecting the battery?
Disconnecting the battery may temporarily erase the code, but it does not repair the underlying electrical fault. The code will return once the monitor runs, and it may erase useful readiness data.
Is it safe to drive with a P1193 code?
Driving conditions depend on the symptoms. If the vehicle is in limp mode or lacks throttle response, continued driving could create a safety hazard. Sensor circuit faults are generally less urgent but should be diagnosed promptly.
What Should You Do About the P1193 Code?
Confirm the exact factory definition for your specific vehicle application, then follow the applicable manufacturer diagnostic procedure.
Because P1193 is manufacturer-specific, it may point to an intake air temperature sensor issue, a fuel pressure sensor fault, or an electronic throttle system problem. Do not assume a universal repair path.
Inspect the relevant system and components, perform targeted electrical tests, and confirm the root cause before replacing any parts.
