P0237

Test 1 - 2:

Test 3 - 7:

Test 8 - 10:

SYMPTOM
PO237-MAP SENSOR VOLTAGE TOO LOW

WHEN MONITORED
With the ignition on and battery voltage greater than 10.4 volts.

SET CONDITION
The circuit voltage to the ECM falls below a calibrated threshold for a certain period of time.

POSSIBLE CAUSES
- Other DTC's
- 5 volt circuit shorted to sensor return circuit
- Signal circuit shorted to sensor return circuit
- MAP sensor
- Signal circuit open
- Supply circuit open
- MAP signal circuit short to ground
- ECM