Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Description Of Frozen Values
EXPLANATION
Frozen values are parameter values that are stored when a diagnostic trouble code (DTC) is stored. Not all parameters can be read off for all diagnostic trouble codes (DTCs). The parameter values can only be read off where they can provide more information about the prevailing circumstances when the diagnostic trouble code (DTC) was stored.
GLOBAL TIME, VALUE
The value indicates the time since the central electronic module (CEM) was first powered. The value is given in seconds.
TOTAL MILEAGE, VALUE
Measurement range: 0-1, 000, 000 km
The value indicates the vehicle's total mileage when the Diagnostic Trouble Code (DTC) was generated.
MECU POWER SUPPLY, VALUE
Measurement range: 0-63 V
Normal range: 12.0 - 14.5 V
The value indicates the supply voltage to the central electronic module (CEM) when the diagnostic trouble code (DTC) was stored.
PASSENGER COMPARTMENT TEMPERATURE, VALUE
Measurement range: -40 to +215 °C
The value indicates the passenger compartment temperature when the diagnostic trouble code (DTC) was stored.
OUTSIDE TEMPERATURE, VALUE
Measurement range: -40 to +215 °C
The value indicates the outside temperature when the diagnostic trouble code (DTC) was stored.
POWER SUPPLY POSITION, STATUS
The value indicates the current status of the power supply position when the diagnostic trouble code (DTC) was stored.
Key removed
Key recently removed
Key approved
Ignition off after Accessory position
Accessory position
Accessory position after Ignition on
Ignition on
Running
Start attempts
Signal missing
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.