HomeU0420 · Manufacturer communications

U0420 · Manufacturer communications

Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.

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SSM 54742

FORD

Reported code forms U0420:82

Some 2025-2026 Mustang GTD vehicles may set diagnostic trouble code (DTC) U0420:82 in the image processing module a (IPMA) during a diagnostic self-test. This may be due to the module's DTC sensitivity during vehicle…

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MERCEDES-BENZ

Reported code forms U0420E2

Complaint Either during PDI or after updating vehicle software, there may be: • "A+S" - Active and Stored DTC • "S" - Stored DTC Some known erroneous DTC's are: • C1016E0 with error ID: SIG_ESP_71 • B15BF00 with error…

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MERCEDES-BENZ

Reported code forms U0420E2

Complaint Either during PDI or after updating vehicle software, there may be: • "A+S" - Active and Stored DTC • "S" - Stored DTC Some known erroneous DTC's are: • C1016E0 with error ID: SIG_ESP_71 • B15BF00 with error…

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SSM 54206

FORD

Reported code forms U0420:82

Some 2025 Mustang GTD vehicles may set diagnostic trouble code (DTC) U0420:82 in the image processing module a (IPMA) during a diagnostic self-test. This may be due to the module's DTC sensitivity during vehicle…

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SSM 53991

FORD

Reported code forms U0420:82

Some 2025 Mustang GTD vehicles may set diagnostic trouble code (DTC) U0420:82 in the image processing module a (IPMA) during a diagnostic self-test. This may be due to the module's DTC sensitivity during vehicle…

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9100596

JEEP

Reported code forms U0420-00

"Gear Assy - Steering Rack 1) If below DTCs are observed, please refer to 08-095-25 REV. B (For MY24) and 08-094-25 REV. A (For MY25) U0420-00 - Invalid Data Received from Power Steering Control Module. (Set by CADM2)…

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JEEP

Reported code forms U0420-00

"Flash: Electric Power Steering (EPS) Module Updates The customer may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following…

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JEEP

Reported code forms U0420-00

"Flash: Electric Power Steering (EPS) Module Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes…

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SSM 51099

LINCOLN

Reported code forms U0420

Some 2019 MKC vehicles without lane keep assist may exhibit an AdvanceTrac/hill start assist message(s) and/or illuminated electronic stability control/traction control indicator lamp with diagnostic trouble codes…

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15-003-20-3737a

MAZDA

Reported code forms U0420:68

Some vehicles may exhibit that the SBS/SCBS warning light (amber) turns ON right after the engine is started with DTC U0420:68 [FSC] (Error signal received from electric power steering (EPS) control module) stored in…

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15-003-20-3737

MAZDA

Reported code forms U0420:68

Some vehicles may exhibit that the SBS/SCBS warning light (amber) turns ON right after the engine is started with DTC U0420:68 [FSC] stored in memory. à ̄‚· DTC U0420:68 [Forward sensing camera (FSC)]: Error signal…

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PIT5499B

CHEVROLET, GMC

Reported code forms U0420

This Preliminary Information communication provides information to the technician that vehicles may have an Antilock Braking System or Malfunction Indicator Lamp illuminated. Also Low Brake Fluid lamp on with the master…

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SSM 48506

LINCOLN

Reported code forms U0420

2019 MKC - Without Lane Keep Assist AdvanceTrac, Hill Start Assist Message(s) And/Or Stability Control Indicator Lamp Illuminated With DTCs U0420 And U0415 Some 2019 MKC vehicles without lane keep assist may exhibit an…

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SSM 48083

LINCOLN

Reported code forms U0420

Some 2019 MKC vehicles without lane keep assist may exhibit an advancetrac, hill start assist message(s) and/or the electronic stability control/traction control indicator lamp illuminated with diagnostic trouble codes…

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SSM 47910

LINCOLN

Reported code forms U0420

SSM 47910 - 2019 MKC - Without Lane Keep Assist – Advance Trac, Hill Start Assist Message(s)And/Or Stability Control Indicator Lamp Illuminated With DTCs U0420 And U0415 Some 2019 MKC vehicles without lane keep assist…

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PIT5499A

CHEVROLET, GMC

Reported code forms U0420

This Preliminary Information communication provides information to the technician that vehicles may have an Antilock Braking System or Malfunction Indicator Lamp illuminated. Also Low Brake Fluid lamp on with the master…

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17NA190

BUICK, CHEVROLET

Reported code forms U0420

This informational bulletin provides information for technicians during diagnosis for DTC U0420.

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PIT5499

CHEVROLET, GMC

Reported code forms U0420

This Preliminary Information communication provides information to the technician that vehicles may have an Antilock Braking System or Malfunction Indicator Lamp illuminated. Also Low Brake Fluid lamp on with the master…

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SSM71278

LAND ROVER

Reported code forms U0420-68

"ISSUE: A CUSTOMER MAY REPORT THE VEHICLE STEERING FEELS HEAVY POTENTIALLY ACCOMPANIED BY VISUAL OR AUDIBLE WARNINGS THROUGH THE INSTRUMENT PACK. THE FOLLOWING DTCS MAY ALSO BE LOGGED: EPAS DTCS LOGGED: -B1304-16:…

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SSM71278

LAND ROVER

Reported code forms U0420-68

"ISSUE: A CUSTOMER MAY REPORT THE VEHICLE STEERING FEELS HEAVY POTENTIALLY ACCOMPANIED BY VISUAL OR AUDIBLE WARNINGS THROUGH THE INSTRUMENT PACK. THE FOLLOWING DTCS MAY ALSO BE LOGGED: EPAS DTCS LOGGED: -B1304-16:…

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SSM71278

LAND ROVER

Reported code forms U0420-68

"ISSUE: A CUSTOMER MAY REPORT THE VEHICLE STEERING FEELS HEAVY POTENTIALLY ACCOMPANIED BY VISUAL OR AUDIBLE WARNINGS THROUGH THE INSTRUMENT PACK. THE FOLLOWING DTCS MAY ALSO BE LOGGED: EPAS DTCS LOGGED: -B1304-16:…

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SSM 71278

LAND ROVER

Reported code forms U0420-68

"ISSUE: A CUSTOMER MAY REPORT THE VEHICLE STEERING FEELS HEAVY POTENTIALLY ACCOMPANIED BY VISUAL OR AUDIBLE WARNINGS THROUGH THE INSTRUMENT PACK. THE FOLLOWING DTCS MAY ALSO BE LOGGED: EPAS DTCS LOGGED: -B1304-16:…

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