The control module detected that the expected Fault in communication with the built-in systems interface on the CAN was absent. Documented for the AM6/AT6 automatic gearbox ECU on Peugeot applications; the same PSA control units are also fitted to Citroën models.
TuningBot DTC Database · v4.37.15
U1318 Diagnostic Trouble Code (5 interpretations)
5 manufacturer-specific interpretations across 1 manufacturer in the TuningBot DTC database.
PSA
5 interpretationsThe control module detected that the expected Fault absence of communication with the built-in systems interface was absent. Documented for the Bosch ESP 8.1 stability control ECU on Peugeot applications; the same PSA control units are also fitted to Citroën models.
The control module detected the fault condition "Invalid value" for the Fault in the information transmitted by the BSI ECU. Documented for the Bosch MED 17.4.x engine ECU (EP6 THP family) on Peugeot applications; the same PSA control units are also fitted to Citroën models.
The control module detected the fault condition "Error in length or prohibited value on the BSI datastream" for the Intersystems CAN. Documented for the Continental SID 807 injection ECU (DV6C 1.6 HDi) on Peugeot applications; the same PSA control units are also fitted to Citroën models.
The control module detected an internal control-unit fault (Length or prohibited value error of the frame BSI). Documented for the Delphi DCM 3.5 injection ECU (DW10C 2.0 HDi) on Peugeot applications; the same PSA control units are also fitted to Citroën models.
Related and nearby codes
How to read U1318
Network: communication between control units.
Manufacturer-defined range: the meaning can differ between brands.
Specific fault index within the subsystem.
Frequently asked questions about U1318
What does U1318 mean?
Diagnostic Trouble Code (5 interpretations). The control module detected that the expected Fault in communication with the built-in systems interface on the CAN was absent. Documented for the AM6/AT6 automatic gearbox ECU on Peugeot applications; the same PSA control units are also fitted to Citroën models.
Is U1318 generic or manufacturer-specific?
U1318 is a manufacturer-specific code. In this database it is documented for: PSA. The same number can mean something different on other brands.
Can TuningBot remove U1318 at file level?
Not guaranteed. Powertrain (P) codes can be reliably disabled in the ECU calibration, but body, chassis and network codes depend on the specific control unit and how the fault is implemented - some can be handled, some cannot. Ask for a quote and our engineers will check your file and tell you, free of charge, whether U1318 is removable in your case.
Other file services
Understand the system behind this code: Diagnostic Strategy and DTC Logic
