The control module detected a fault associated with the Engine Coolant Temp. Signal Out - Of - Range High 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 · v4.37.15
P1118 Diagnostic Trouble Code (12 interpretations)
12 manufacturer-specific interpretations across 11 manufacturers in the TuningBot DTC database.
Chevrolet
1 interpretation
Chrysler
1 interpretationThe control module detected a fault associated with the Engine Coolant Temp Signal Out - Of Range High circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Chrysler.
Recommended checks
- Perform a full module scan
- Review freeze-frame and occurrence data
- Confirm the exact vehicle, ECU and software context
- Inspect relevant wiring and connectors
- Check applicable OEM service information
Dodge
1 interpretationThe control module registered the fault condition described as "ECM - internal fault". This is the manufacturer-specific definition used by Dodge.
Possible causes
ECM
Ford
1 interpretationThe control module detected that the signal in the Manifold Absolute Temperature circuit stayed below the expected operating range. This is the manufacturer-specific definition used by Ford.
Possible causes
- Wiring
- IAT sensor
- ECM
Kia
1 interpretationThe control module detected improper operation of the Electronic throttle system (ETS), throttle motor. This is the manufacturer-specific definition used by Kia.
Possible causes
- Wiring
- throttle motor
Land Rover
1 interpretationThe control module detected that the Radiator QUtlet engine coolant temperature (ECT) signal stayed above the expected range. This is the manufacturer-specific definition used by Land Rover.
Possible causes
- Wiring
- ECT sensor
- ECM
Lexus
1 interpretationThe control module detected that the signal in the Coolant Temperature circuit stayed above the expected operating range. This is the manufacturer-specific definition used by Lexus.
MINI
1 interpretationThe control module detected that the signal in the Mass Or Volume Air Flow circuit stayed above the expected operating range. This is the manufacturer-specific definition used by MINI.
Toyota
1 interpretationThe control module detected that the signal in the Coolant Temperature circuit stayed above the expected operating range. This is the manufacturer-specific definition used by Toyota.
VAG
2 interpretationsThe control module detected an interruption (open circuit) in the Heated oxygen sensor (HO2S) 2, Bank 1 - heater circuit, so the expected electrical continuity was not present. This is the manufacturer-specific definition used by Audi.
Possible causes
- Wiring open circuit
- HO2S
The control module detected an interruption (open circuit) in the Oxygen (Lambda) Sensor Heating; B1 S2 circuit, so the expected electrical continuity was not present. This is the manufacturer-specific definition used by Volkswagen. Volkswagen Group tools also report it as fault code 17526. Documented across Volkswagen Group applications (Audi, SEAT and Škoda included).
Symptoms
Malfunction Indicator Light (MIL) faulty
Possible causes
- Wiring/Connectors from/to Oxygen (Lambda) Sensor Bank 1 Sensor 2 Heating faulty
- Oxygen (Lambda) Sensor Bank 1 Sensor 2 Heating Circuit faulty
Recommended checks
- Check Wiring/Connectors from/to Oxygen (Lambda) Sensor Bank 1 Sensor 2 Heating
- Check Oxygen (Lambda) Sensor Bank 1 Sensor 2 Heating Circuit
Volvo
1 interpretationThe control module judged the Manifold absolute pressure (MAP) sensor/mass air flow (MAF) sensor, adaptation behaviour implausible for the current operating conditions. This is the manufacturer-specific definition used by Volvo.
Possible causes
- Wiring
- intake leak
- MAF sensor
- MAP sensor
Related and nearby codes
How to read P1118
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 P1118
What does P1118 mean?
Diagnostic Trouble Code (12 interpretations). The control module detected a fault associated with the Engine Coolant Temp. Signal Out - Of - Range High 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 P1118 generic or manufacturer-specific?
P1118 is a manufacturer-specific code. In this database it is documented for: Chevrolet, Chrysler, Dodge, Ford, Kia, Land Rover, Lexus, MINI, Toyota, VAG, Volvo. The same number can mean something different on other brands.
Can TuningBot remove P1118 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: MAF Sensor
