Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
JEEP
Reported code forms P2066
Flash: Powertrain Control Module (PCM) Updates **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes…
JEEP
Reported code forms P2066
Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes…
GENESIS
Reported code forms P2066
Certain 2025MY GV80 and GV80 Coupe (JX1) vehicles equipped with the 3.5T-GDI Lambda III engine may NOT experience a warning lamp illumination of DTC P0461/P2066 when the calculated fuel consumption and the fuel…
GENESIS
Reported code forms P2066
Certain 2025MY GV80 and GV80 Coupe (JX1) vehicles equipped with the 3.5T-GDI Lambda III engine may NOT experience a warning lamp illumination of DTC P0461/P2066 when the calculated fuel consumption and the fuel…
JEEP
Reported code forms P2066
"Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● P2066 - Fuel…
MERCEDES-BENZ, MERCEDES-MAYBACH
Reported code forms P206600 P206609
Complaint Customer-perceived problem: • Fuel gauge reading implausible • MIL ON (market-dependent) N118/3 Fault codes in control units FSCM_GEN4/5/6 • For these fault codes, the tests contained in XENTRY must be carried…
MERCEDES-BENZ, MERCEDES-MAYBACH
Reported code forms P206600 P206609
Complaint Customer-perceived problem: • Fuel gauge reading implausible • MIL ON (market-dependent) N118/3 Fault codes in control units FSCM_GEN4/5/6 • For these fault codes, the tests contained in XENTRY must be carried…
JEEP
Reported code forms P2066
"Flash: Powertrain Control Module (PCM) Updates **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Code (DTC): ●…
JEEP
Reported code forms P2066
"Flash: Powertrain Control Module (PCM) Updates **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● P2066 - Fuel…
JEEP
Reported code forms P2066
"Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● P2066 - Fuel…
JEEP
Reported code forms P2066
"Flash: Powertrain Control Module (PCM) Updates **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● P2066 - Fuel…
CHRYSLER, DODGE
Reported code forms P2066
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…
RAM
Reported code forms P2066
Flash: 6.4L Diagnostic And System Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. NOTE: **This bulletin contains optional software update…
RAM
Reported code forms P2066
Flash: 6.4L Diagnostic And System Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. Customers may experience a Malfunction Indicator Lamp…
RAM
Reported code forms P2066
Flash: Malfunction Indicator Lamp (MIL) Illumination. Includes Various Driveability Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. A…
RAM
Reported code forms P2066
Flash: Malfunction Indicator Lamp (MIL) Illumination. Includes Various Driveability Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. A…
RAM
Reported code forms P2066
Flash: Malfunction Indicator Lamp (MIL) Illumination. Includes Various Driveability Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. A…
RAM
Reported code forms P2066
Flash: Malfunction Indicator Lamp (MIL) Illumination. Includes Various Driveability Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. A…
RAM
Reported code forms P2066
Flash: Malfunction Indicator Lamp (MIL) Illumination This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. A small number of customers may experience a…
CHEVROLET, GMC
Reported code forms P2066
This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp on. Technician may find Diagnostic Trouble Codes P0087, P0461,…
CHEVROLET
Reported code forms P2066
GM: TECHNICIAN MAY BE UNABLE TO COMMAND PUMP TOOL TRANSFER PUMP ON WITH SCAN TOOL. SES MIL MAY BE ON WITH ONE OR MORE OF DTCS P0087 P0461 P2066 P028E P2632 P2633 P2634 AND/OR P2636. ALSO INCLUDED MAKE/MODEL GMC SIERRA…
CHEVROLET
Reported code forms P2066
GENERAL MOTORS: FUEL SYSTEM DTC'S P2066, P2636. A COMMENT MADE ON THE ACCURACY OF THE FUEL GAUGE. IN SOME RARE CASES, THEY MAY COMMENT THAT THE VEHICLE RUNS OUT OF FUEL AT APPROX. 1/4 TANK. *PE
CADILLAC
Reported code forms P2066
INACCURATE FUEL GAGE READINGS, FUEL GAGE READS EMPTY WHEN THERE IS FUEL IN TANK, FUEL LEVEL LOW MESSAGE IN DIC, DTC P2066 SET (REPROGRAM ECM). WITH 2.8L OR 3.6L ENGINE (VINS T, 7 - RPO'S LP1, LY7). *NJ
CHEVROLET
Reported code forms P2066
ERRATIC FUEL GAUGE OPERATION DTC'S P2066 AND/OR P2636. *NJ
CADILLAC
Reported code forms P2066
FUEL GAUGE STUCK ON EMPTY DTC P2066 (2.8L (LP1) OR 3.6L (LY7) ENGINES). *NJ
HYUNDAI
Reported code forms P2066
DUAL FUEL LEVEL SENDER SYSTEM - DTC P2065, P2066, P2067, P2068 - SHOP MANUAL. *TT
CHRYSLER
Reported code forms P2066
MALFUNCTION INDICATOR LAMP ILLUMINATION DIAGNOSTIC TROUBLE CODE (DTC) P2066 FUEL LEVEL SENSOR. *TT
CADILLAC
Reported code forms P2066
DIAGNOSTIC INFORMATION FOR FUEL GAUGE READING EMPTY AFTER FILLING TANK WITH VEHICLE RUNNING, DIAGNOSTIC TROUBLE CODE P0461 OR P2066 MAY SET. *TT