Applicable Systems
Elantra
Sonata
Tucson
Santa Fe
Symptoms
The ECM has detected a air flow and manifold pressure fault. The check engine light is illuminated. Vehicle may experience reduced performance, rough idle, or failed emissions test.
Possible Causes
- Wiring open or shorted to ground
- Connector corrosion or loose pin
- Sensor internal failure
Troubleshooting Steps
- Step 1: Connect OBD-II scan tool and read all active DTCs
DTC code and freeze frame data retrieved - Step 2: Inspect wiring harness and connectors for damage or corrosion
Wiring intact, connectors clean and seated - Step 3: Test sensor or actuator resistance and signal output
Component output within manufacturer specification - Step 4: Check fuse for the circuit and replace if blown
Fuse intact or replaced with correct rating - Step 5: Clear DTC with scan tool and road test to verify repair
No re-occurrence of DTC after test drive
How to Reset
To reset: Clear the DTC with an OBD-II scan tool after repairing the underlying issue. Drive the vehicle through a complete drive cycle to confirm the repair.
Frequently Asked Questions
- Q: What does P1137 mean on a Hyundai?
P1137 is a manufacturer-specific code indicating a air flow and manifold pressure issue. Refer to the Hyundai service manual for exact component identification.
- Q: Can I drive with P1137 active?
Short-term driving is possible, but the underlying issue should be diagnosed promptly to prevent catalytic converter or engine damage.
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Source: SAE J2012 Manufacturer-Specific DTC, Hyundai Service Manual
Category: OBD-II
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