The control module detected the fault condition "Initialised values incoherent" for the Richness adaptation fault. 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.
TuningBot DTC Database · v4.37.15
P1186 PSA - Richness adaptation fault : Initialised values incoherent
Manufacturer-specific interpretation for PSA. All interpretations of P1186
What P1186 means
The control module detected the fault condition "Initialised values incoherent" for the Richness adaptation fault. Documented for the Bosch MEV17.4 engine ECU (EP6 1.6 VTi) on Peugeot applications; the same PSA control units are also fitted to Citroën models.
Related and nearby codes
How to read P1186
Powertrain: engine, transmission and driveline systems.
Manufacturer-defined range: the meaning can differ between brands.
Specific fault index within the subsystem.
Frequently asked questions about P1186
What does P1186 mean?
Richness adaptation fault : Initialised values incoherent. The control module detected the fault condition "Initialised values incoherent" for the Richness adaptation fault. 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.
Is P1186 generic or manufacturer-specific?
P1186 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 P1186 at file level?
If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.
Other file services
Understand the system behind this code: Diagnostic Strategy and DTC Logic
