P2437 Dodge Code - Secondary Air Injection System Air Flow/Pressure Sensor Circuit Low Bank 2
Quick Answer
The Secondary Air Injection (AIR) System aids in the reduction of hydrocarbon exhaust emissions during a cold start-up. Common causes include Faulty AIR Pressure Sensor, AIR Pressure Sensor harness is open or shorted, AIR Pressure Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P2437 Dodge indicates Secondary Air Injection System Air Flow/Pressure Sensor Circuit Low Bank 2.
- Common causes
- Common causes include Faulty AIR Pressure Sensor, AIR Pressure Sensor harness is open or shorted, AIR Pressure Sensor circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P2437 Dodge Description
The Powertrain Control Module (PCM) activates the AIR system by simultaneously supplying grounds to the AIR pump and the AIR valve relays. This action closes the relays' internal contacts. The AIR pump and the AIR control solenoid valve/pressure sensor assembly are in turn energized, the pump runs and the control/shut-off valve opens.
The AIR pump sends pressurized fresh air into the pipes/hoses through the open control/shut-off valve, and into the exhaust manifold. The extra air accelerates the catalyst operation, helping it to reach operating temperature faster. The AIR pump remains ON for a short period of time after the control/shut-off valve is commanded OFF. When the AIR pump is commanded OFF it will not run or be activated until the next vehicle start. When the AIR system is inactive, the closed AIR control/shut-off valve prevents air/exhaust flow in either direction.
The AIR system pressure sensor is used to monitor pressure at the AIR control solenoid valve/pressure sensor assembly inlet during the commanded ON/OFF states.
What are the Possible Causes of the DTC P2437 Dodge?
- Faulty AIR Pressure Sensor
- AIR Pressure Sensor harness is open or shorted
- AIR Pressure Sensor circuit poor electrical connection
How to Fix the DTC P2437 Dodge?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P2437 Dodge code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P2437 Dodge Code
What does the OBDII code P2437 mean for a Dodge vehicle?
Code P2437 indicates a problem with the Secondary Air Injection System Air Flow/Pressure Sensor Circuit Low on Bank 2, meaning the sensor is reporting low voltage or pressure readings.
What are the common symptoms of code P2437 in Dodge vehicles?
Symptoms may include the check engine light turning on, reduced engine performance, failed emissions tests, and unusual noises from the secondary air injection system.
What causes code P2437 to appear in Dodge vehicles?
Common causes include a faulty air flow/pressure sensor on Bank 2, damaged wiring or connectors, a malfunctioning secondary air injection pump, or clogged air passages.
Can driving with code P2437 cause further damage?
While the vehicle may still be drivable, prolonged operation can lead to increased emissions, inefficient engine performance, or damage to the secondary air injection system components.
How do you diagnose code P2437 in a Dodge vehicle?
Diagnosis typically involves using a scan tool to confirm the code, visually inspecting the wiring and connectors, testing the air flow/pressure sensor, and checking the secondary air injection pump operation.
How can code P2437 be fixed in Dodge vehicles?
Repairs may include replacing the faulty air flow/pressure sensor, repairing damaged wiring or connectors, cleaning or replacing clogged air passages, or replacing the secondary air injection pump.
How much does it cost to repair code P2437 on a Dodge vehicle?
Repair costs can vary but typically range from $150 to $500, depending on whether the sensor, wiring, or pump needs replacement.
Can code P2437 cause the vehicle to fail an emissions test?
Yes, this code can cause increased emissions, which may result in failing an emissions test.
Is code P2437 specific to Dodge vehicles?
No, code P2437 is a generic OBDII code that can occur in various makes and models, though the specifics of the issue may vary by manufacturer.
What tools are required to fix code P2437 in Dodge vehicles?
Tools needed include an OBDII scanner, multimeter for testing electrical circuits, and possibly specialized tools for replacing air injection system components.
Discuss the causes and fixes for P2437 Dodge OBDII Code
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