2010.5 Citroen DS4 check engine

41Monitoring
Warning lampis onCauseAction/Obser vations
Batter y charge fixed. The battery charging circuit has a fault (dir ty or loose terminals, slack or cut alternator belt, ...).
The warning lamp should go off when the engine is star ted. If it does not go off, contact a CITROËN dealer or a qualified workshop.
Braking
fixed, associated with the STOP warning lamp.
The braking system fluid level has dropped significantly. You must stop as soon as it is safe to do so. Top up with brake fluid recommended by CITROËN. If the problem persists, have the system checked by a CITROËN dealer or a qualified workshop.
+
fixed, associated with the electric parking brake fault warning lamp, if the parking brake is released.
The braking system has a fault. You must stop as soon as it is safe to do so. Park, switch off the ignition and contact a CITROËN dealer or a qualified workshop.
+
fixed, associated with the STOP and ABS warning lamps.
The electronic brake force distribution (EBFD) system has a fault. You must stop as soon as it is safe to do so. Have it checked by a CITROËN dealer or a qualified workshop.

43Monitoring
Ser vice
temporarily, accompanied by a message.
A minor fault has occurred for which there is no specific warning lamp. Identify the fault by reading the message shown on the screen, such as, for example: - the opening of the doors, boot or bonnet, - the engine oil level, - the remote control battery,
- the tyre pressures, - saturation of the par ticle emission filter on Diesel vehicles (see "Checks - § Checks/Par ticle emissions filter"). For any other faults, contact a CITROËN dealer or a qualified workshop.
fixed, accompanied by a message and an audible signal.
A major fault has occurred for which there is no specific warning lamp. Identify the fault by reading the message shown on the screen and contact a CITROËN dealer or a qualified workshop.
Warning lampis onCauseAction/Obser vations
Par ticle emissions filter (Diesel)
fixed, accompanied by an audible signal
message on the risk of blockage of the par ticle emissions filter.
This indicates that the par ticle emissions filter is star ting to become
saturated.
As soon as driving conditions allow, regenerate the filter by driving at a speed of at least 35 mph (60 km/h)
until the warning lamp goes off.
fixed, accompanied by an audible signal and and a message that the
particle emissions filter additive level is too low.
This indicates the low level of the additive reser voir. Have the reser voir topped up as soon as possible by a CITROËN dealer or a qualified workshop.

Warning lampis onCauseAction/Obser vations
Anti-lock Braking System (ABS) fixed. The anti-lock braking system has a fault. The vehicle retains conventional braking. Drive carefully at reduced speed and contact a CITROËN dealer or a qualified workshop without delay.
Dynamic stability control (ESP/ASR)
flashing. The ESP/ASR regulation is active. The system optimises traction and improves the directional stability of the vehicle.
fixed. Unless it has been deactivated (button pressed and its indicator lamp on), the ESP/ASR or hill star t assist system has a fault.
Have it checked by a CITROËN dealer or a qualified workshop.
Low fuel level fixed with the two last bars flashing. When it first comes on there remains approximately 6 litres of fuel in the tank.
You must refuel as soon as possible to avoid running out of fuel. This warning lamp will come on every time the ignition is switched on, until a sufficient addition of fuel is made. Fuel tank capacity: approximately 60 litres. Never continue to drive until you run out of fuel a s this could damage the emission control and injection systems.
Engine autodiagnosis system
fixed. The emission control system has a fault. The warning lamp should go off when the engine is started. If it does not go off, contact a CITROËN dealer or qualified workshop without delay.
flashing. The engine management system has a fault. Risk of destruction of the catalytic conver ter. Have it checked by a CITROËN dealer or a qualified workshop.

Monitoring
Power steering fixed. The power steering has a fault. Drive carefully at reduced speed. Have it checked by a CITROËN dealer or a qualified workshop.
Under-inflated tyre fixed. The pressure in one or more wheels is too low. Check the pressure of the tyres as soon as possible. This check should preferably be carried out when the tyres are cold.
Directional headlamps flashing. The directional headlamps system has a fault. Have it checked by a CITROËN dealer or a qualified workshop.
Warning lampis onCauseAction/Obser vations
Foot on the brake pedal
fixed. The brake pedal is not pressed. With the 6 -speed electronic gearbox system, press the brake pedal to star t the engine (lever in position N ). If you wish to release the parking brake without pressing the brake pedal, this warning lamp will remain on.
flashing. With the 6 -speed electronic gearbox system, if you hold the vehicle on an incline using the accelerator for too long, the clutch overheats.
Use the brake pedal and/or the electric parking brak e.
Airbags
temporarily. This lamp comes on for a few seconds when you turn on the ignition, then goes off.
This lamp should go off when the engine is star ted. If it does not go off, contact a CITROËN dealer or a qualified workshop.
fixed. One of the airbag or seat belt pretensioner systems has a fault. Have it checked by a CITROËN dealer or a qualified workshop.

This information is displayed for a few seconds when the ignition is switched on, at the same time as the ser vice information.
Engine oil level indicator
The vehicle must be on level ground and the engine must have been off for more than 30 minutes for this level check to be accurate.
Oil level correct
Oil level incorrect
This is indicated by the flashing of "OIL" or the display of a specific message in the instrument
panel, coupled with the ser vice warning lamp and accompanied by an audible signal. If the low oil level is confirmed by a check using
the dipstick, the level must be topped up to avoid damage to the engine.
Oil level indicator fault
This is indicated by the flashing of "OIL - -" or the display of a specific message in the instrument panel. Consult a CITROËN dealer.
There are 2 marks on the dipstick: - A = max; never exceed this level (risk of damage to the engine), - B = min; top up the level via the oil filler cap, using the correct grade of oil for your engine.
Dipstick
Refer to the "Checks" section to locate the dipstick and the oil filler cap on your engine.

Monitoring
Manual test in the central colour screen associated with the satellite navigation system
This function allows you to check the status of the vehicle systems (reminder of the "activated"/"deactivated " status of the configurable functions) and to display the aler ts log.
 With the engine running, to star t a manual test, briefly press the ".../000" button on the instrument panel.
The following information appears successively in the instrument panel central colour screen: - engine oil level indicator (see corresponding section),
- ser vice indicator (see corresponding section), - under-inflation detection (if your vehicle
is fitted with this system; see the "Safety" section), - current warnings and aler t messages, if any (see corresponding section for the warning lamp or system concerned), - status of configurable functions (see
"Multifunction screens").
This information also appears every time the ignition is switched on (automatic test).

77Comfort
Recommendations for ventilation and air con ditioning
If after an extended stop in sunshine, the interior temperature is very high, first ventilate the passenger compar tment for a few moments.
Put the air flow control at a setting high enough to quickly change the air in the passenger compar tment. The air conditioning system does not contain chlorine and does not present any danger to the ozone layer.
In order for these systems to be fully effective, follow the operation and maintenance guidelines below:  To obtain an even air distribution, take care not to obstruct the exterior air intake grilles located at the base of the windscreen, the nozzles, the vents and the air outlets, as well as the air extractor located in the boot.  Do not cover the sunshine sensor, located on the d ashboard; this is used for regulation of the digital air conditioning system.  Operate the air conditioning system for at least 5 to 10 minutes, once or twice a month to keep it in per fect working order.  Ensure that the passenger compar tment filter is in g ood condition and have the filter elements replaced regularly (refer to the "Checks" secti on). We recommend the use of a combined passenger compa r tment filter. Thanks to its special active additive, it contributes to the purification of the air breathed by the occupants and the cleanliness of the passenger compar t ment (reduction of allergic symptoms, bad odours and greasy deposits).  To ensure correct operation of the air conditioning system, you are also advised to have it checked regularly as recommended in the Maintenanc e and Warranty Guide.
 If the system does not produce cold air, switch it off and contact a CITROËN dealer or a qualified workshop. When towing the maximum load on a steep gradient in high temperatures, switching off the
air conditioning increases the available engine power and so improves the towing ability.
The condensation created by the air conditioning results in a discharge of water under the vehicle which is per fectly normal.

Visibility
Windscreen and headlamp
wash
 Pull the windscreen wiper stalk towards you. The windscreen wash then the windscreen wipers operate for a fixed period. The headlamp washers only operate when the dipped beam headlamps are on .
Low screenwash/headlamp wash level
The low level of this fluid is indicated by gauge in the reser voir filler neck under the bonnet. Checking and topping up this fluid can only be done when stationary with the engine off.
On vehicles fitted with headlamp washers, the driver should check the level of this fluid regularly, par ticularly during winter.
Refer to "Checks - § Screenwash/headlamp
wash level" for the procedure on checking the level.