LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Audi >> 2012 >> Q5 2.0T >> Repair and Diagnosis >> Engine Performance >> System >> 2.0L - Generic Scan Tool - Engine Code(S): CAEB >> Generic Scan Tool >> Diagnosis And Testing >> DTC Tables >> Fuel And Air Ratios, Control Module
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Fuel And Air Ratios, Control Module

DTC Error Message Diagnostic Procedure Malfunction Criteria and Threshold Value Secondary Parameters with Enable Conditions Monitoring Time Length Frequency of checks, MIL Illum
P1114 Internal resistance too large (Bank 1, sensor 2) -- Check the Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-. Refer to OXYGEN SENSOR O2S BEHIND THREE WAY CATALYTIC CONVERTER, CHECKING . Heater resistance, (128-648)*(8-40)1.02-25.9 k Ω (dep. on mod. exhaust temp. and heater power)
  • Battery voltage, 10.7-16.1 V
  • Modeled exhaust gas temp, 300-600° C
  • Engine shutoff time, 300 Sec.
  • IAT, >6.75° C
15 Sec
  • 2 DCY
P12A1 Fuel Rail Pressure Sensor Inappropriately Low -- Check the Fuel Pressure Sensor -G247-. Refer to FUEL PRESSURE SENSOR, CHECKING .
  • pressure control activity, > 0.25 mPa
  • AND
  • fuel trim activity, < 0.85
  • engine speed > 1000....4000 RPM
  • engine load58.01... 1535.98%
  • ECT>= 54.8° C
  • IAT< 90° C
  • evap purge adaptation < 22.00
  • lambda control closed loop
  • fuel cut off not active
  • 5 Sec
  • multiple
  • 2 DCY
P12A2 Fuel Rail Pressure Sensor Inappropriately High -- Check the Fuel Pressure Sensor -G247-. Refer to FUEL PRESSURE SENSOR, CHECKING .
  • pressure control activity, < 0.25 mPa
  • AND
  • fuel trim activity, > 1.84
  • engine speed > 600....900 RPM
  • engine load 10.01... 1535.98%
  • ECT>= 54.8° C
  • IAT< 90° C
  • evap purge adaptation < 22.00
  • lambda control closed loop
  • fuel cut off not active
  • 5 Sec
  • multiple
  • 2 DCY
P12A4 Fuel Rail Pump Control Valve Stuck Closed -- Check the Fuel Pressure Sensor -G247-. Refer to FUEL PRESSURE SENSOR, CHECKING .
  • pressure control activity, <6.00 mPa
  • AND
  • fuel trim activity, 0.85...1.15
  • engine speed > 600 RPM
  • evap purge adaptation < 22.00
  • ECT>= 54.8° C
  • IAT< 90° C
  • lambda control closed loop
  • fuel cut off not active
5 Sec
  • multiple
  • 2 DCY
P13EA ignition timing monitor -- Check the Ignition Coils with Power Output Stage -N70-. Refer to IGNITION COIL WITH POWER OUTPUT STAGE, CHECKING . difference between commanded spark timing vs. actual value> 0.60%
  • time during catalyst heating> 13Sec
  • commanded spark retard during catalyst heating< 80%
  • catalyst heating active
  • 0.5 Sec
  • once/DCY
  • 2 DCY
P150A Engine-Off-Time Check ALL power and grounds to the ECM. The ECM must have a power supply when the key is off to run the timer and system checks. If OK, replace the ECM. comparison of engine off time from instrument cluster control unit with engine after run time.
  • difference between engine-off-time and ECM after-run time< -12.0 Sec
comparison of engine off time from instrument cluster control unit with engine after run time
  • difference between engine-off-time and ECM after-run time> 12.0 Sec
  • key-on after ECM after-run timeactive
  • CANactive
  • key-on during ECM after-run timeactive
  • CANactive
  • 6 Sec
  • once/DCY
  • 2 DCY