P1D73 on the 2017 Chrysler Pacifica
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
This code is specific to a manufacturer and is not described here. Its meaning is in the manufacturer's service information.
| 1806917 | 2022-10-24. Service bulletin. Flash: Powertrain Diagnostic and System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with thelatest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, a technician may find the following DiagnosticTrouble Codes (DTCs) have been set:U1400-00 - Implausible TPS Signal Received P1D73 - AGS Performance -(Active Grill Shutter). P0171 - Fuel System 1/1 Lean. P0174 - Fuel System 2/1 Lean. The following Diagnostic Trouble Codes (DTCs) have been changed from a one trip fault to atwo trip fault:P0335 - Crankshaft Position Sensor Circuit. P0339 - Crankshaft Position Sensor Intermittent. P0340 - Camshaft Position Sensor Circuit - Bank 1 Sensor 1. P0344 - Camshaft Position Sensor Intermittent - Bank 1 Sensor 1. P0345 - Camshaft Position Sensor Circuit - Bank 2 Sensor 1. P0349 - Camshaft Position Sensor Intermittent - Bank 2 Sensor 1. P0365 - Camshaft Position Sensor Circuit - Bank 1 Sensor 2. P0369 - Camshaft Position Sensor Intermittent - Bank 1 Sensor 2. P0390 - Camshaft Position Sensor Circuit - Bank 2 Sensor 2. P0394 - Camshaft Position Sensor Intermittent - Bank 2 Sensor 2. The technician may also find the following DTC stored in the Anti-lock Brake System (ABS) Module memory:The following Diagnostic Trouble Code (DTC) is caused by a calibration in the PCM that is in conflict with the ABS Module programming. Thenew software flash will correct this issue.C121C-00 - Torque Request Signal Denied. This software release also includes:Improvement at lower ambient temperatures for Engine Stop/Start (ESS) Starts. Improvements to vehicle drivability during a cam sensor and/or crank sensor malfunction. Transmission quick learn. Engine enhancements. |
|---|---|
| 18-057-16 REV. A | 2022-08-08. Service bulletin. Flash: 3.6L Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, a technician may find the following Diagnostic Trouble Codes (DTCs) have been set: · **P1D73 - AGS Performance - (Active Grill Shutter). · P0171 - Fuel System 1/1 Lean. · P0174 - Fuel System 2/1 Lean.** The technician may also find the following DTC stored in the Anti-lock Brake System (ABS) Module memory: NOTE: The Diagnostic Trouble Code (DTC) is caused by a calibration in the PCM that is in conflict with the ABS Module programming. The new software flash will correct this issue. · C121C-00 - Torque Request Signal Denied. **This software release also includes: · Transmission quick learn. · Engine enhancements.** |
| 18-002-19 REV A | 2019-07-15. Service bulletin. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. A customer or technicians may be unable to read data information from the OBDII connector when using a generic scan tool (APAC).Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, a technician may find the following DTCs have been set (NAFTA):U0418 - Implausible Data Received From Brake System Control Module 1. U0432 - Invalid Data Received From Multi-Axis Acceleration Sensor Module. P06EF - Engine Restart Performance. P06E9 - Engine Starter Performance. P00FD - Battery -B- State Of Charge Performance. C2222-68 - Improper Powerdown - Event Information. P0607-00 - ECU Internal Performance - ESM. U0402-00 - Implausible Data Received From TCM. U145D-00 - Implausible Data Received From TCM On D-PT. U1465-00 - Implausible Driver Shift Request Signal Received. U1400-00 - Implausible TPS Signal Received P1D73 - AGS Performance - (Active Grill Shutter). P0171 - Fuel System 1/1 Lean. P0174 - Fuel System 2/1 Lean. The following DTCs have been changed from a one trip fault to a two trip fault (NAFTA):P0335 - Crankshaft Position Sensor Circuit. P0339 - Crankshaft Position Sensor Intermittent. P0340 - Camshaft Position Sensor Circuit - Bank 1 Sensor 1. P0344 - Camshaft Position Sensor Intermittent - Bank 1 Sensor 1. P0345 - Camshaft Position Sensor Circuit - Bank 2 Sensor 1. P0349 - Camshaft Position Sensor Intermittent - Bank 2 Sensor 1. P0365 - Camshaft Position Sensor Circuit - Bank 1 Sensor 2. P0369 - Camshaft Position Sensor Intermittent - Bank 1 Sensor 2. P0390 - Camshaft Position Sensor Circuit - Bank 2 Sensor 2. P0394 - Camshaft Position Sensor Intermittent - Bank 2 Sensor 2. The technician may also find the following DTC stored in the Anti-lock Brake System (ABS) Module memory (NAFTA):The following DTC is caused by a calibration in the PCM that is in conflict with the ABS Module programming. |
| 18-057-16 REV. A | 2018-06-11. Service bulletin. Flash: 3.6L Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, a technician may find the following Diagnostic Trouble Codes (DTCs) have been set: · **P1D73 - AGS Performance - (Active Grill Shutter). · P0171 - Fuel System 1/1 Lean. · P0174 - Fuel System 2/1 Lean.** The technician may also find the following DTC stored in the Anti-lock Brake System (ABS) Module memory: NOTE: The Diagnostic Trouble Code (DTC) is caused by a calibration in the PCM that is in conflict with the ABS Module programming. The new software flash will correct this issue. · C121C-00 - Torque Request Signal Denied. **This software release also includes: · Transmission quick learn. · Engine enhancements.** |
| 18-057-16 REV. A | 2016-09-14. Service bulletin. "FLASH: 3.6L POWERTRAIN DIAGNOSTIC AND SYSTEM ENHANCEMENTS THIS BULLETIN INVOLVES REPROGRAMMING THE POWERTRAIN CONTROL MODULE (PCM) WITH THE LATEST AVAILABLE SOFTWARE. CUSTOMERS MAY EXPERIENCE A MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATION. UPON FURTHER INVESTIGATION, A TECHNICIAN MAY FIND THE FOLLOWING DIAGNOSTIC TROUBLE CODES (DTCS) HAVE BEEN SET: · **P1D73 - AGS PERFORMANCE - (ACTIVE GRILL SHUTTER). · P0171 - FUEL SYSTEM 1/1 LEAN. · P0174 - FUEL SYSTEM 2/1 LEAN.** THE TECHNICIAN MAY ALSO FIND THE FOLLOWING DTC STORED IN THE ANTI-LOCK BRAKE SYSTEM (ABS) MODULE MEMORY: NOTE: THE DIAGNOSTIC TROUBLE CODE (DTC) IS CAUSED BY A CALIBRATION IN THE PCM THAT IS IN CONFLICT WITH THE ABS MODULE PROGRAMMING. THE NEW SOFTWARE FLASH WILL CORRECT THIS ISSUE. · C121C-00 - TORQUE REQUEST SIGNAL DENIED. **THIS SOFTWARE RELEASE ALSO INCLUDES: · TRANSMISSION QUICK LEARN. · ENGINE ENHANCEMENTS.**" |
5 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.