Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2021 Jeep Compass TrailhawkFACTORY OEM SERVICE PROCEDURE
2.4L - DTCS P1E08 To P2AF5
- Diagnosis And Testing
- P1E08-Stop/Start Disabled - Airbag Deployment
- P1E09-Closed Loop Fueling Not Achieved - Bank 1 Downstream
- P2072-Electronic Throttle Control System - Ice Blockage
- P2096-Downstream Fuel Trim System 1 Lean
- P2097-Downstream Fuel Trim System 1 Rich
- P2100-Electronic Throttle Control Motor Circuit/Open - Bank 1
- P2101-Electronic Throttle Control Motor Performance - Bank 1
- P2107-Electronic Throttle Control Module Processor
- P2110-Electronic Throttle Control System Bank 1- Forced Limited Rpm
- P2111-Electronic Throttle Control System - Unable To Close - Bank 1
- P2112-Electronic Throttle Control System - Unable To Open - Bank 1
- P2115-Accelerator Pedal Position Sensor 1 Minimum Stop Performance
- P2116-Accelerator Pedal Position Sensor 2 Minimum Stop Performance
- P2118-Electronic Throttle Control Motor Current Performance - Bank 1
- P2122-Accelerator Pedal Position Sensor 1 Circuit Low
- P2123-Accelerator Pedal Position Sensor 1 Circuit High
- P2127-Accelerator Pedal Position Sensor 2 Circuit Low
- P2128-Accelerator Pedal Position Sensor 2 Circuit High
- P2135-Throttle Position Sensor 1/2 Correlation
- P2138-Accelerator Pedal Position Sensor 1/2 Correlation
- P2166-Accelerator Pedal Position Sensor 1 Maximum Stop Performance
- P2167-Accelerator Pedal Position Sensor 2 Maximum Stop Performance
- P2172-High Airflow/Vacuum Leak Detected (Instantaneous Accumulation)
- P2173-High Airflow/Vacuum Leak Detected (Slow Accumulation)
- P2174-Low Airflow/Restriction Detected (Instantaneous Accumulation)
- P2181-Cooling System Performance
- P219A-Bank 1 Air-Fuel Ratio Imbalance
- P2226-Barometric Pressure Sensor
- P2228-Barometric Pressure Circuit Low
- P2229-Barometric Pressure Circuit High
- P2237-O2 Sensor 1/1 Pump Cell Current Circuit/Open
- P2238-O2 Sensor 1/1 Pump Cell Current Circuit Low
- P2239-O2 Sensor 1/1 Pump Cell Current Circuit High
- P2243-O2 Sensor 1/1 Reference Voltage Circuit/Open
- P2244-O2 Sensor 1/1 Reference Voltage Performance
- P2245-O2 Sensor 1/1 Reference Voltage Circuit Low
- P2246-O2 Sensor 1/1 Reference Voltage Circuit High
- P2251-O2 Sensor 1/1 Negative Current Control Circuit/Open
- P2252-O2 Sensor 1/1 Negative Current Control Circuit Low
- P2253-O2 Sensor 1/1 Negative Current Control Circuit High
- P2271-O2 Sensor 1/2 Signal Biased Rich
- P2299-Brake Pedal Position / Accelerator Pedal Position Incompatible
- P2302-Ignition Coil 1 Secondary Circuit - Insufficient Ionization
- P2305-Ignition Coil 2 Secondary Circuit - Insufficient Ionization
- P2308-Ignition Coil 3 Secondary Circuit - Insufficient Ionization
- P2311-Ignition Coil 4 Secondary Circuit - Insufficient Ionization
- P2503-Charging System Output Low
- P2504-Charging System Output High
- P257D-Engine Hood Switch Circuit Performance
- P257E-Engine Hood Switch Circuit Low
- P257F-Engine Hood Switch Circuit High
- P2610-Pcm Internal Engine Off Timer Performance
- P2626-O2 Sensor 1/1 Pump Cell Current Trim Circuit/Open
- P2627-O2 Sensor 1/1 Pump Cell Current Trim Circuit Low
- P2628-O2 Sensor 1/1 Pump Cell Current Trim Circuit High
- P26E4-Starter Control 2 Circuit
- P2AF5-Starter Relay 3 Stuck On
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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