DTC P115D-86: Mass Air Flow Circuit Offset - Signal invalid: Action
- Check the condition of the air filter and examine the induction pipes for debris which could disrupt air flow at the sensing element
- Check for contamination at sensing element of mass air flow sensor
- Refer to the electrical circuit diagrams and check the mass air flow sensor circuit for short circuit to ground, short circuit to power, open circuit, high resistance
- Inspect connectors for signs of water ingress and pins for damage and/or corrosion
- Install a new mass air flow sensor, only when diagnosed as failed
- Using the Jaguar Land Rover approved diagnostic equipment, carry out 'Powertrain control module mass air flow adaption clear' routine (0x0406_0E)
- Using the Jaguar Land Rover approved diagnostic equipment, carry out 'Diesel fueling adaption reinitialization' routine (0x402C)
- Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and retest