P1112
WarningDual Alternator Lower Circuit Malfunction/ Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent Low Voltage
Is it safe to drive?
🟡 Check the vehicle display for drive or charge restrictions and schedule service promptly.
What does P1112 mean?
P-code P1112 means "Dual Alternator Lower Circuit Malfunction/ Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent Low Voltage". It is a manufacturer-specific diagnostic trouble code (DTC) in the powertrain. The dual alternator lower circuit malfunction/ manifold absolute pressure (map) sensor circuit intermittent low voltage signal is absent or intermittent, preventing the control module from monitoring this parameter. This warning should be addressed within the next few days to avoid further damage. This code applies to OBD-II compliant electric and hybrid vehicles.
Possible Causes
- Sensor has completely failed and produces no output signal
- Disconnected or severely corroded electrical connector
- Broken wire in the signal path between sensor and module
- Control module failure unable to process the incoming signal
Recommended Actions
- 1 Avoid aggressive driving and schedule a diagnostic appointment within the next 1–3 days
- 2 Scan for all DTCs with an OBD-II scanner — note any related codes stored alongside P1112
- 3 Inspect the powertrain component and its wiring for visible damage
- 4 Check for water intrusion in connector areas and clean contacts if corroded
- 5 Clear the DTC, road-test the vehicle, and re-scan to confirm whether the fault returns
- 6 If the fault persists after inspection and clearing, consult an EV-certified technician for component replacement