P0237

Tests 1 - 3:

Tests 4 - 8:

Tests 9 - 12:

SYMPTOM
P0237 - MAP SENSOR VOLTAGE TOO LOW

WHEN MONITORED
With engine speed above 416 rpm but less than 3520 rpm and battery voltage greater than 10.4 volts.

SET CONDITION
The MAP sensor signal voltage is below 0.1 volt for 2.0 seconds with engine running.

POSSIBLE CAUSES
- "BOOST PRESSURE TEST" did not pass
- 5 volt supply voltage low DTC present
- No possible causes remaining
- 5 volt supply circuit open
- MAP sensor signal circuit shorted to ground
- MAP sensor signal circuit shorted to sensor ground circuit
- Wiring harness intermittent defect
- Wiring harness observable defect
- Engine Control Module
- MAP sensor