Description of parameters

WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.

No.	Text	Notes
1	Engine speed = RPM	Measurement range 0 - 8,160 RPM. Idling speed approximately 750 RPM.
2	Vehicle Speed = km/h	Vehicle speed. Measurement range 0-255 km/h
3	Coolant temperature = °C	Engine temperature. Measurement range -48 to +142°C.
4	Engine Coolant Temperature (ECT), start = °C	Engine temperature when ignition was last switched on. Measurement range -48 to +142°C.
5	Throttle position =°	Throttle position. 0° with the throttle closed and 75-100° with the throttle fully open.
6	Mass air flow, real = kg/h	Measured air consumption from the mass air flow (MAF) sensor. Normal value is approximately 8-13 kg/h at idling speed and warm engine.
7	Air consumption = mg/stroke	Air consumption per crankshaft revolution. Measurement range 0-1,389 mg/stroke. A measurement of the engine load. Normal value is approximately 100 mg/stroke when idling with the engine at operating temperature.
8	MAF real, MAF calculated, idle = kg/h	The difference between the measured consumption from the mass air flow (MAF) sensor and a calculated reference value. The value is only applicable during turbocharger (TC) control.
9	Battery voltage = V	Battery voltage after the system relay. Normal value is 13.5 -14.5 V when the generator (GEN) is charging.
10	Air temperature °C	Intake air temperature measured after the charge air cooler (CAC)). Measurement range -48 to +142°C.
11	Ambient pressure =mbar	Atmospheric pressure, normal value is approximately 1000 mbar at sea level. The value varies depending on other circumstances.
12	Injection time = ms	Injector opening time. The normal value is approximately 2 ms when the engine is idling at operating temperature.
13	Lambda adaptation, part load = %	The value indicates how much the injection period at part load has been adjusted compared to a reference value. The value is first updated after the engine has been revved up.
14	Lambda adaptation, idle = ms	The value indicates how much the injection period at idling speed has been adjusted compared to a reference value. The value is first updated after the engine has been revved up.
15	Ignition angle = °	Measurement range 72° before top dead center (TDC) to 23° after top dead center (TDC). Normal value when idling is approximately 0-15°.
16	Lambda status	O/L= Open Loop, fuel trim not active C/L= Closed Loop, fuel trim active
17	Lambda integrator	Short-term fuel trim oscillates between -5 and +5 at lambda = 1 when the engine is idling at operating temperature.
18	Oxygen sensor front signal (Lambda) = V	Voltage from the front heated oxygen sensor (HO2S). Measurement range 0 -1 V. Oscillates between 0 and 1 V when fuel trim is activated.
19	Oxygen sensor signal, rear = V	Voltage from the rear heated oxygen sensor (HO2S). Measurement range 0-1 V. Oscillates between 0 and 1 V when the three-way catalytic converter (TWC) is cold (>300°C). Stabilizes at 0.2-0.7 V when the three-way catalytic converter (TWC) is at operating temperature (<300°C)
20	Idle duty cycle = %	Idle air control (IAC) valve opening. Measurement range 0 - 100%. The normal value is approximately 20-40% when idling with the engine at operating temperature.
21	Idle air trim adaptation = %	The value shows by how much idle air control (IAC) valve opening has been adjusted in relation to a predetermined value. Measurement range -50 to +50%.
22	Idle adaptation, A/C = %	Idle air trim adaptation with the A/C compressor activated. The value shows by how much idle air control (IAC) valve opening has been adjusted in relation to a reference value.
23	Turbo control valve duty cycle = %	Turbocharger (TC) control valve opening. Measurement range 0 - 100%. A value over 0% means the engine power is regulated using the valve. The value only applies when the turbocharger control valve is activated.
24	EVAP duty cycle = %	EVAP valve opening. Measurement range 0-100%. 0% EVAP valve shut. 100% EVAP valve fully open. The intermediate values depend on the opening of the EVAP valve
25	A/C-pressure = mbar	Pressure in the air conditioning (A/C) system. Measurement range 0 - 3442 mbar.
26	A/C demand =	Displays whether the engine control module (ECM) has requested that the ECC control module starts the air conditioning (A/C) compressor. The A/C-compressor is permitted to start if the air conditioning (A/C) pressure is below a parameter. Yes = ECC requests that the A/C compressor starts. No = ECC does not request that the A/C compressor starts.
27	A/C relay	Yes = A/C relay activated. No = A/C relay not activated.
28	Immo locked =	NO= Immobilizer control module permits start. Yes = Immobilizer control module does not permit start.
29	VIN learned =	Yes = Engine control module (ECM) has learned the VIN-code. No = Engine control module (ECM) has not learned any VIN-code.
30	Faulty VIN =	Yes = Different VIN codes in the immobilizer control module and engine control module (ECM). No = Immobilizer control module and engine control module (ECM) have the same VIN-code. The parameter is relevant only when the communication between the immobilizer control module and the engine control module (ECM) is functioning.
31	Manifold pressure = hpa	The pressure in the intake system. Measurement range 0 -2400 mbar. Normal value when idling is approximately 400 mbar.
32	Camshaft position = °	The camshaft position in relation to crankshaft. Measurement range -66° - 30°. The value varies depending on how camshaft is controlled. Camshaft control only occurs when the engine is cold.