P1933 Mazda Code - Fuel Additive Pump Control Circuit Low
Quick Answer
The Fuel Additive Pump is a positive displacement pump (reciprocating pump) and, in response to commands from the fuel additive control unit, delivers a metered quantity of fuel additive to the injector on the top of the fuel tank via a short fuel pipe; the injector then injects the additive into the fuel tank. Common causes include Faulty Fuel Additive Level Pump, Fuel Additive Level Pump harness is open or shorted, Fuel Additive Level Pump 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
- P1933 Mazda indicates Fuel Additive Pump Control Circuit Low.
- Common causes
- Common causes include Faulty Fuel Additive Level Pump, Fuel Additive Level Pump harness is open or shorted, Fuel Additive Level Pump 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 P1933 Mazda Description
The piezo sensor on the Fuel Additive Pump records the fill level of the fuel additive in the fuel additive tank and transmits this information to the fuel additive control unit.
Its other task is to determine any change in the viscosity of the fuel additive as a function of ambient temperatures; this may result in the metered quantity of fuel additive having to be corrected.
If the fill level of the fuel additive in the fuel additive tank falls below a certain limit, the engine system fault warning lamp in the instrument cluster will switch on.
If the fuel additive tank becomes empty, the Malfunction Indicator Lamp (MIL) will light up.
What are the Possible Causes of the DTC P1933 Mazda?
- Faulty Fuel Additive Level Pump
- Fuel Additive Level Pump harness is open or shorted
- Fuel Additive Level Pump circuit poor electrical connection
How to Fix the DTC P1933 Mazda?
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 P1933 Mazda 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 P1933 Mazda Code
1. What are the common symptoms of OBDII code P1933 in a Mazda related to the fuel additive pump control circuit?
- Common symptoms include poor fuel efficiency, rough idling, reduced engine performance, and possible stalling.
2. What are the potential causes of the P1933 code in a Mazda?
- The code P1933 can be triggered by issues such as a faulty fuel additive pump, damaged wiring or connectors in the control circuit, or a malfunctioning ECM.
3. How can I diagnose the P1933 code in my Mazda related to the fuel additive pump control circuit?
- To diagnose the issue, you can perform a visual inspection of the wiring and connectors, test the fuel additive pump, and use an OBDII scanner to read and clear the code.
4. Is it safe to continue driving with the P1933 code in my Mazda?
- It is not recommended to keep driving with the P1933 code, as it can lead to further damage to the fuel system and potentially cause more severe issues with the engine.
5. Can I repair the P1933 code in my Mazda myself?
- Depending on your experience and tools, you may be able to repair the issue yourself by replacing the fuel additive pump, repairing damaged wiring, or resetting the ECM.
6. What are some tips for repairing the P1933 code in a Mazda at home?
- Make sure to disconnect the battery before working on any electrical components, use a multimeter to test for continuity in the wiring, and follow the manufacturer's guidelines for replacing parts.
7. How much does it typically cost to repair the P1933 code in a Mazda at a dealership or mechanic?
- The cost of repairing the P1933 code can vary depending on the exact cause of the issue, but it may range from $200 to $600 at a dealership or mechanic.
8. Are there any preventive measures to avoid triggering the P1933 code in a Mazda?
- Regular maintenance, such as checking and replacing the fuel additive pump as recommended by the manufacturer, can help prevent issues that lead to the P1933 code.
9. Can a faulty fuel additive pump cause other OBDII codes to appear in a Mazda?
- Yes, a malfunctioning fuel additive pump can lead to other related codes such as P1932 (Fuel Additive Control Module Circuit Low) or P1934 (Fuel Additive Control Module Circuit High) in a Mazda.
10. How soon should I address the P1933 code in my Mazda after it appears?
- It is advisable to address the P1933 code as soon as possible to prevent any further damage to the fuel system and ensure optimal engine performance and efficiency.
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