The CHECK ENGINE light will blink out the FAULT CODES starting with the lowest number first. These FAULT CODES
consist of 4 digits each separated by a short pause (ie. blink pause blink blink pause blink pause blink translates as 1 2
1 1).
CODE MALFUNCTIONING SYSTEM EXPLANATION
1211 DME Control Unit This code is stored when the DME self test fails. Delete any
stored codes. Start and run the car for 30 seconds. Turn off
the ignition for 30 seconds. Rerun the diagnosis. If the same
fault recurs, the DME control unit must be replaced.
1212 Lambda (O2) Sensor 2 This code is stored when the engine temperature is >70C and
the Oxygen Sensor value is out of range or not present. Check
the Oxygen Sensor wiring and the operation of the sensor. The
value should fluctuate between 0.02 and 0.85V. Slow
fluctuation indicates a polluted Oxygen sensor and negative
values indicate a damaged sensor. Note: Cars without
Catalytic Convertors will incorrectly store this code.
1213 Lambda Control 2 This code is stored when the DME detects excessive
deviations in the air-fuel mixture (too rich or too lean) for longer
than 10 seconds. Possible causes: Fuel tank ran empty,
Incorrect Fuel Pressure, Injector valve defective or coked,
Engine Temperature Sensor defective, Secondary air leak,
Fuel evaporation control system defective, Air Flow Meter
defective and/or the combustion is being disturbed by
mechanical failure (Spark plugs,, compression,
intake/exhaust valves, ...etc.)
1215 Air Mass/Volume Sensor This code is stored if there is a break or short-circuit at: Air
Mass Flow Meter or its supply wires or the voltage supply to
Air Mass Flow Meter insufficient. Cable damage is the most
common cause of this trouble code.
1216 Throttle Potentiometer This code is stored if a break or short-circuit occurs in the
wiring to the Throttle Potentiometer or the potentiometer is
defective. Damage at the throttle potentiometer connection is
the most common cause of this fault.
1218 Output Stage, Group 1 This code is stored if there is a short to B+ or Ground at the
Output Amplifier Stage (Bank 1). Generally this code occurs
with other defects. Causes may be a faulty Idle Speed
Actuator, Injector Valves, Ignition Coil on Plug, Oxygen
Sensor Heating Relay, Fuel Evaporation, Control Valve,
Malfunction Indicator Lamp (MIL) and/or EKP Relay. Delete
the code after examining for other faults. If the code recurs,
delete code, then disconnect the DME for a minimum of 5
minutes to initiate a reset. Rerun car. If code recurs and no
other defects are found the DME is most likely damaged and
must be replaced. If the code does not recur and the engine
runs properly, ignore.
1219 Output Stage, Group 2 This code is stored if there is a short to B+ or Ground at the
Output Amplifier Stage (Bank 2). Generally this code occurs
with other defects. Causes may be a faulty Idle Speed
Actuator, Injector Valves, Ignition Coil on Plug, Oxygen
Sensor Heating Relay, Fuel Evaporation, Control Valve,
Malfunction Indicator Lamp (MIL) and/or EKP Relay. Delete
the code after examining for other faults. If the code recurs,
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