P1603 Code - Engine Stall History
Quick Answer
After starting the engine, this Diagnostic Trouble Code (DTC) is stored when the engine stops without the ignition switch being operated. Common causes include Air Leak in Intake System, Faulty Mass Air Flow (MAF) sensor, Faulty Engine Coolant Temperature Sensor. 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
- P1603 indicates Engine Stall History.
- Common causes
- Common causes include Air Leak in Intake System, Faulty Mass Air Flow (MAF) sensor, Faulty Engine Coolant Temperature Sensor.
- 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 P1603 Description
What are the Possible Causes of the DTC P1603?
- Air Leak in Intake System
- Faulty Mass Air Flow (MAF) sensor
- Faulty Engine Coolant Temperature Sensor
- Faulty Fuel Pump
- Faulty Throttle Body Assembly
- Faulty Engine Control Module (ECM)
How to Fix the DTC P1603?
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 P1603 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.
Need more information about the P1603 code?
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Information for Specific Makes
- P1603 Audi — Engine Control Module Defective
- P1603 Buick — Loss Of Sensing Diagnostic Mode Data Conditions
- P1603 Cadillac — Loss Of Sensing Diagnostic Mode Data Conditions
- P1603 Chevrolet — Loss Of Sensing Diagnostic Mode Data Conditions
- P1603 Chrysler — PCM Internal Dual-Port Communication Failure
- P1603 Dodge — PCM Internal Dual-Port Communication Failure
- P1603 GMC — Loss Of Sensing Diagnostic Mode Data Conditions
- P1603 Hyundai — CAN Communication Bus Error
- P1603 Jeep — PCM Internal Dual-Port Communication Failure
- P1603 KIA — CAN Communication Bus Error
- P1603 Lexus — Engine Stall History
- P1603 Mazda — Engine Control Module Incorrect Immobilizer Code
- P1603 Mercedes-Benz — Engine Control Module Defective
- P1603 Mitsubishi — Battery Backup Line Malfunction
- P1603 RAM — PCM Internal Dual-Port Communication Failure
- P1603 Saab — Engine Control Module Defective
- P1603 Scion — Engine Stall History
- P1603 Toyota — Engine Stall History
- P1603 Volkswagen — Engine Control Module Defective
Frequently Asked Questions about P1603 Code
1. What are common symptoms of OBDII code P1603 (Engine Stall History)?
- Common symptoms include engine stalling or hesitation, rough idling, and difficulty starting the vehicle.
2. What causes OBDII code P1603 (Engine Stall History) to trigger?
- This code is typically triggered by a history of engine stalling events, which may be caused by issues such as a faulty ignition system, fuel delivery problems, or sensor malfunctions.
3. Can a dirty or faulty mass airflow sensor (MAF) trigger code P1603?
- Yes, a dirty or faulty MAF sensor can affect air-fuel mixture, leading to engine stalling events that trigger code P1603.
4. How can I diagnose the cause of OBDII code P1603 (Engine Stall History)?
- Diagnosis typically involves checking for related codes, inspecting the ignition system, testing the fuel delivery system, and verifying sensor functionality.
5. Is it safe to continue driving with OBDII code P1603 (Engine Stall History) present?
- It is not recommended to continue driving with this code present, as persistent engine stalling can pose safety risks and potentially cause further damage to the vehicle.
6. Can a clogged fuel filter be a possible cause of OBDII code P1603?
- Yes, a clogged fuel filter can restrict fuel flow, leading to engine stalling events that may trigger code P1603.
7. How can I repair OBDII code P1603 (Engine Stall History)?
- Repair methods may include cleaning or replacing the MAF sensor, addressing any ignition system issues, replacing a clogged fuel filter, and resolving any other underlying causes of engine stalling.
8. Can a faulty crankshaft position sensor cause OBDII code P1603 to appear?
- Yes, a faulty crankshaft position sensor can disrupt engine timing and contribute to engine stalling events that trigger code P1603.
9. Will resetting the OBDII system clear code P1603 (Engine Stall History)?
- Resetting the system may clear the code temporarily, but it is important to address the underlying issue causing the engine stalling to prevent the code from reappearing.
10. How do I prevent OBDII code P1603 (Engine Stall History) from recurring?
- Regular maintenance, such as inspecting and replacing worn components, keeping the fuel system clean, and addressing any engine performance issues promptly, can help prevent code P1603 from recurring.
Discuss the causes and fixes for P1603 OBDII Code
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May have a problem with the Engine Control Module (ECM) software. You should try clearing the code first. If the codes comes back have your local dealer inspect it.
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Start by checking all the fuses, if fuses are OK, then you may have a problem with the P1603 MITSUBISHI - Battery Backup Line Malfunction.
P1603 MITSUBISHI - Battery Backup Line Malfunction
Read more: http://www.autocodes.com/p1...
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The P1778 code is for the CVT Step Motor. As far as I know the only solution is to replace the step motor inside the transmission.
P1778 NISSAN - Step Motor Function
Read more: http://www.autocodes.com/p1...
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I need help i Have a 2002 mustang with the 3.8 v6 throwing this p1603 code would it be the same code meaning as this one as well as codes c0703 and p1130
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I couldn't find any information in the factory service manual for the P1603 or C0703 codes. How did you get those codes?
P1130 FORD - Lack of Upstream Heated Oxygen Sensor Switch Adaptive Fuel Limit Bank 1
Read more: https://www.autocodes.com/p...The p1130 code is for the O2 sensor. Before replacing any parts, try just clearing the codes and drive.
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The p1603 and c0703 codes is what my obd2 code reader gave me when I checked my car
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Toyota sequia model 2014 made bay usa code is p1603 & p1604 please help me any body car is not start
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Both code are setting because the engine is not starting, but the code are not the cause of the problem. There must be something else causing the no start problem, for example, no gas, bad spark plugs, clogged air filter.
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