The control module detected a fault associated with the Loss Of IPM Serial Data circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Chevrolet.
TuningBot DTC Database · v4.37.14
P1612 Diagnostic Trouble Code (15 interpretations)
15 manufacturer-specific interpretations across 11 manufacturers in the TuningBot DTC database.
Chevrolet
1 interpretation
Chrysler
1 interpretationThe control module detected improper operation of the Throttle position (TP) control module. This is the manufacturer-specific definition used by Chrysler.
Possible causes
- Wiring
- connector
- throttle position (TP) control module
Dodge
1 interpretationThe control module detected a fault associated with the Engine control module (ECM) - supply voltage circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Dodge.
Possible causes
- Wiring
- connector
- ignition switch
Hyundai
1 interpretationThe control module detected a fault associated with the Ventilation Solenoid Valve Electrical circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Hyundai.
Jaguar
1 interpretationThe control module detected improper operation of the Throttle Offset. This is the manufacturer-specific definition used by Jaguar.
Mercedes-Benz
1 interpretationThe control module detected a fault associated with the IFI Control Module N37 Voltage Circuit 15 circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Mercedes-Benz.
Nissan
1 interpretationThe control module detected improper operation of the Immobilizer control module/engine control module (ECM) communication. This is the manufacturer-specific definition used by Nissan.
Possible causes
- Wiring
- immobilizer control module
- ECM
Opel
1 interpretationThe control module detected that the Immobilizer control module - no / state or value did not match what was expected. This is the manufacturer-specific definition used by Opel.
PSA
4 interpretationsThe control module detected the fault condition "Code ADC2 reading or writing error" for the Coded anti-start. Documented for the Bosch EDC16C34 injection ECU (DV6TED4 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 (Fault internal to the EEPROM (Coded immobiliser)). 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 (EEPROM internal fault). 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.
The control module detected the fault condition "Immobiliser write failed" for the Coded engine immobiliser generation 2. Documented for the Magneti Marelli MM6KP engine ECU (EW7A/EW10A) on Peugeot applications; the same PSA control units are also fitted to Citroën models.
VAG
2 interpretationsThe control module detected a fault associated with the Engine control module (ECM) - coding circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Audi.
Possible causes
Incorrectly coded
The control module detected a fault associated with the Engine Control Module Incorrectly Coded circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Volkswagen. Volkswagen Group tools also report it as fault code 18020. Documented across Volkswagen Group applications (Audi, SEAT and Škoda included).
Symptoms
- Driveability Issues
- Emissions worse
- Other Fault Codes stored
Possible causes
- Engine Control Unit (ECU) incorrectly coded
- Incorrect Cruise Control Type enabled
Recommended checks
- Check Engine Control Unit (ECU) coding
- Check Cruise Control Activation
Volvo
1 interpretationThe control module did not receive the expected Electronic throttle system (ETS) signal. This is the manufacturer-specific definition used by Volvo.
Possible causes
- Wiring
- ETS
Related and nearby codes
How to read P1612
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 P1612
What does P1612 mean?
Diagnostic Trouble Code (15 interpretations). The control module detected a fault associated with the Loss Of IPM Serial Data circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Chevrolet.
Is P1612 generic or manufacturer-specific?
P1612 is a manufacturer-specific code. In this database it is documented for: Chevrolet, Chrysler, Dodge, Hyundai, Jaguar, Mercedes-Benz, Nissan, Opel, PSA, VAG, Volvo. The same number can mean something different on other brands.
Can TuningBot remove P1612 at file level?
If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry and, where the ECU needs it, corrects the checksum too. 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: Immobilizer Systems and ECU Pairing
