P1238 MITSUBISHI Possible Causes
- Faulty throttle body
- Faulty mass air flow (MAF) sensor
- Mass air flow (MAF) sensor harness is open or shorted
- Poor electrical connection in the mass air flow (MAF) sensor circuit
How is the P1238 MITSUBISHI code repaired?
Start by checking the “Possible Causes” listed above. Visually inspect the wiring harness and related connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
- Engine light on (or service engine soon warning light)
P1238 MITSUBISHI Meaning
The powertrain control module (PCM) monitors the mass air flow (MAF) sensor. The PCM sets the OBDII code when the mass air flow (MAF) sensor does not meet factory specifications.