Fault Code P1393 – Complete Technical Guide

1. Meaning of Code P1393

Code P1393 generally indicates:
“Camshaft Position (CMP) Sensor Circuit Problem – Range/Performance”

Key difference from P1392:

  • P1392: CKP and CMP correlation problem
  • P1393: Specific CMP circuit failure

2. Main Causes

A. Electrical Problems (70%)

  • Faulty CMP sensor
  • Short circuit or open circuit in wiring
  • Corroded or loose connector
  • Power supply issue (low voltage)

B. Mechanical Problems (20%)

  • Physical damage to sensor
  • Metal deposits on sensor
  • Excessive camshaft play

C. Other Causes (10%)

  • Control module (ECU) problem
  • Electromagnetic interference
  • Incorrect engine timing

3. Diagnostic Procedure

Step 1 – Basic Checks

  1. Visual inspection of sensor and wiring
  2. Check connectors for corrosion
  3. Check engine oil level

Step 2 – Electrical Tests

Test Method Normal Values
Power supply voltage Multimeter (ignition ON) 5V or 12V (depending on model)
Sensor resistance Multimeter (sensor disconnected) 250-1000 ohms
Output signal Oscilloscope (engine running) Regular square signal

Step 3 – Advanced Checks

  1. Sensor data analysis with diagnostic tool
  2. Check mechanical timing
  3. Wiring resistance test

4. Recommended Solutions

  1. Replace CMP sensor (use OEM parts)
  2. Repair wiring if necessary
  3. Clean connectors
  4. ECU software update (if applicable)

5. Frequently Affected Models

  • Honda Civic (1.8L R18)
  • Toyota Corolla (1.8L 2ZR-FE)
  • Ford Focus (2.0L Duratec)
  • Chevrolet Cruze (1.4L LUJ)

6. Repair Costs

Service Average Cost (USD) Duration
Sensor replacement $80-$200 0.5-1h
Wiring repair $100-$300 1-2h
Professional diagnosis $50-$120 0.5h

7. Prevention Tips

  1. Perform regular oil changes
  2. Periodically inspect wiring
  3. Use quality parts
  4. Avoid aggressive engine washes

8. Technical FAQ

Q: Can I drive with a P1393?
→ Risky – Can cause starting and performance problems

Q: How to differentiate P1393 from P0340?
→ P1393 indicates a performance/range problem, P0340 a circuit problem

Q: Can an aftermarket sensor cause this code?
→ Yes, low-end sensors have a high failure rate

9. Reset Procedure

  1. Fix root cause
  2. Clear codes with OBD2 scanner
  3. Perform verification drive cycle

10. Conclusion

Code P1393 requires a methodical approach:

  1. Complete electrical verification
  2. Mechanical inspection
  3. Sensor and circuit testing

For lasting repair, it is recommended to:

  • Use quality parts
  • Thoroughly check wiring
  • Consult a professional for complex diagnostics

Note: Exact specifications vary by vehicle model and year. Always consult your vehicle’s specific repair manual.

Acura P1393 Fault Code – Complete Technical Guide

1. Specific Meaning of Acura P1393

The P1393 code on Acura vehicles indicates:
“Camshaft Position (CMP) Sensor Circuit Performance/Range Problem – Bank 1”

Differences from similar codes:

  • P1391/P1392: CKP and CMP correlation issues
  • P1393: Specific CMP circuit failure

2. Affected Acura Models

Model Engine Years Critical Mileage
TL 3.2L V6 (J32A) 1999-2003 120,000-180,000 km
MDX 3.5L V6 (J35Y) 2007-2013 100,000-160,000 km
RSX 2.0L I4 (K20A) 2002-2006 90,000-150,000 km
RDX 2.3L Turbo (K23A) 2007-2012 80,000-140,000 km

3. Main Causes

A. Electrical Problems (75%)

  • Faulty CMP sensor (ref. Acura 37550-RPY-013)
  • Damaged wiring (especially near exhaust manifold)
  • Oxidized connector (green terminal degradation)
  • Power supply issue (voltage <4.5V or >5.5V)

B. Mechanical Problems (20%)

  • Metal deposits on sensor target
  • Excessive clearance in camshaft
  • Timing issue after service

C. Other Causes (5%)

  • PCM failure (rare but possible)
  • Electromagnetic interference
  • Contaminated engine oil

4. Diagnostic Procedure

Step 1 – Initial Checks

  1. Check oil level and quality
  2. Visually inspect CMP sensor and wiring
  3. Check associated codes (P0340, P0341, etc.)

Step 2 – Electrical Tests

Test Method Normal Values
Power supply voltage Multimeter (ignition ON) 4.5-5.5V
CMP resistance Multimeter (sensor disconnected) 400-1000 ohms
Output signal Oscilloscope (engine running) Regular square signal

Step 3 – Advanced Checks

  1. CMP data analysis with HDS scanner
  2. Mechanical timing verification
  3. Wiring continuity test to PCM

5. Specific Solutions by Engine

For J-Series (V6)

  • CMP sensor replacement (revised version)
  • CMP harness inspection (critical area: firewall passage)
  • PCM connector cleaning

For K-Series (I4)

  • CMP seal check (frequent oil leaks)
  • VTC pulley control
  • PCM reprogramming if necessary

6. Key Technical Data

  • CMP supply voltage: 5V ±0.5V
  • Preventive replacement interval: 150,000 km
  • Sensor tightening torque: 10 Nm (K-series) / 12 Nm (J-series)

7. Repair Costs

Service Cost (USD) Warranty
Sensor replacement $120-$250 2 years
Wiring repair $150-$400 1 year
Professional diagnosis $80-$150 –

8. Common Mistakes

  • Neglecting CMP seal inspection
  • Using non-OEM sensors (failure rate >35%)
  • Forgetting to check power supply voltage

9. Technical FAQ

Q: Can this code cause hard starting?
→ Yes, PCM may mismanage injection without valid CMP signal

Q: Can I reset the code without repair?
→ No, the code will return as long as the problem persists

Q: Difference between P1393 and P0341?
→ P1393 = performance problem, P0341 = circuit problem

10. Post-Repair Procedure

  1. Clear codes with HDS scanner
  2. Perform driving cycle:
  • 10 min at constant speed (60-80 km/h)
  • 3 complete stops/starts
  1. Verify code does not return

11. Prevention Tips

  1. Regular oil changes (every 10,000 km max)
  2. Annual CMP wiring inspection
  3. Use of premium synthetic oil
  4. Periodic connector cleaning

12. Conclusion

To permanently resolve P1393 on Acura:

  1. Complete diagnosis with HDS scanner
  2. Thorough electrical verification
  3. Replacement with Acura/Honda OEM parts

⚠️ Important: Recurring CMP problems on Acura often require thorough inspection of wiring and connectors. Consult a certified Acura technician for complex diagnostics.

Audi Fault Code P1393 – Complete Technical Guide

1. Specific Meaning of Audi P1393

The P1393 code on Audi vehicles indicates:
“Camshaft Position (CMP) Sensor Circuit Performance Malfunction – Bank 1”

Audi Specifics:

  • Primarily affects FSI, TFSI, and TDI engines
  • Can disrupt the Variable Valve Timing (VVT) system
  • Impacts engine performance and fuel consumption

2. Affected Audi Models

Model Engine Years Critical Mileage
A4 2.0T FSI (EA888) 2008-2016 80,000-140,000 km
A6 3.0T TFSI (EA839) 2017-2023 60,000-100,000 km
Q5 2.0TDI (EA189) 2009-2017 120,000-180,000 km
A3 1.8T (EA888 Gen3) 2014-2020 70,000-120,000 km

3. Main Causes

A. Electrical Problems (70%)

  • Faulty CMP sensor (Audi ref. 06F-907-311-C)
  • Damaged wiring (critical area: engine harness routing)
  • Oxidized connector (T14a/T17a)
  • Power supply issue (voltage outside 4.5-5.5V)

B. Mechanical Problems (25%)

  • Metal deposits on the tone wheel
  • Excessive play in the camshaft
  • Timing chain problem (stretching)

C. Other Causes (5%)

  • ECU failure (rare)
  • Electromagnetic interference
  • Contaminated engine oil

4. Diagnostic Procedure

Step 1 – Initial Checks

  1. Check oil level (VW 502/505 viscosity)
  2. Visual inspection of CMP sensor and wiring
  3. Check for associated codes (P0340, P0016, etc.)

Step 2 – Electrical Tests

Test Method Normal Values
Supply voltage Multimeter (ignition ON) 5V ±0.5V
CMP resistance Multimeter (disconnected) 500-1500 ohms
Output signal Oscilloscope (VCDS ideal) Clean square wave

Step 3 – Advanced Checks

  1. CMP data analysis with VCDS/ODIS
  2. Mechanical timing verification
  3. Circuit continuity test to ECU

5. Specific Solutions

For EA888 (2.0T FSI)

  • CMP sensor replacement (revised version)
  • Harness inspection (common chafing area)
  • ECU connector cleaning

For EA839 (3.0T TFSI)

  • Timing adjuster verification
  • Chain tension check
  • Software update

For EA189 (2.0TDI)

  • Tone wheel cleaning
  • Oil pump verification
  • CMP seal replacement

6. Technical Data

  • Sensor torque: 9 Nm
  • Inspection interval: 100,000 km
  • Minimum oil pressure: 2.0 bar (hot idle)

7. Repair Costs

Service Cost (EUR) Warranty
Sensor replacement 150-300€ 2 years
Wiring repair 200-500€ 1 year
Audi diagnostic 90-180€ –

8. Mistakes to Avoid

  • Using non-OEM sensors (40% failure rate)
  • Neglecting wiring inspection
  • Forgetting to reset adaptations

9. Technical FAQ

Q: Risk to the engine?
→ Possible VVT damage if ignored

Q: Can I drive temporarily?
→ Maximum 50 km at low RPM

Q: Difference between P1393 and P0340?
→ P1393 = performance issue, P0340 = open circuit

10. Post-Repair Procedure

  1. Clear codes with VCDS
  2. Perform break-in cycle:
  • 20 min at 2000-2500 RPM
  • 3 engine starts/stops
  1. Check CMP parameters

11. Prevention Tips

  • Strict oil changes (15,000 km max)
  • Annual wiring inspection
  • Use of specific Audi oil
  • Connector cleaning every 2 years

12. Conclusion

To resolve P1393 on Audi:

  1. Complete diagnosis with VCDS/ODIS
  2. Thorough electrical verification
  3. Use of Audi/VW OEM parts

⚠️ Important: Recurring problems often require full engine harness inspection. Consult a certified Audi technician for complex cases.

Buick P1393 Fault Code – Complete Technical Guide

1. Meaning of Code Buick P1393

P1393 on Buick indicates:
“Intermittent problem with the camshaft position sensor (CMP) circuit – Bank 1”

Consequences:

  • Engine light illuminated
  • Performance degradation
  • Risk of difficult starting

2. Affected Buick Models

Model Engine Years Typical Mileage
Enclave 3.6L V6 2012-2017 130,000-190,000 km
Regal 2.0L Turbo 2011-2017 100,000-160,000 km
LaCrosse 3.8L V6 2005-2009 160,000-240,000 km
Encore 1.4L Turbo 2013-2022 80,000-140,000 km

3. Probable Causes

Electrical Problems (70%):

  • Faulty CMP sensor (ref. GM 12677925)
  • Damaged wiring (especially near the exhaust)
  • Oxidized connector (X3 at ECM)
  • Unstable supply voltage

Mechanical Problems (25%):

  • Excessive camshaft play
  • Stretched timing chain (3.6L)
  • Dirt on the tone wheel

Others (5%):

  • Outdated ECM software
  • Grounding issue

4. Diagnostic Procedure

Step 1 – Visual Checks:

  1. Check oil level
  2. Inspect CMP sensor connector
  3. Check wiring condition

Step 2 – Electrical Tests:

Test Method Normal Values
Supply voltage Ignition ON 5V ±0.5V
CMP resistance Sensor disconnected 500-1500Ω
Signal Oscilloscope Clean square signal

Step 3 – Mechanical Checks:

  1. Check chain tension (3.6L)
  2. Inspect tone wheel
  3. Check oil pressure (>1.4 bar)

5. Repair Solutions

For 3.6L V6:

  • Replace CMP sensor
  • Check chain tensioner
  • Clean ECM connector X3

For 2.0L Turbo:

  • Inspect wiring near turbo
  • Replace both sensors (intake/exhaust)
  • Check PCV system

6. Technical Data

  • Tightening torque: 10 Nm
  • Sensor gap: 0.5-1.5mm
  • Inspection interval: 100,000 km

7. Estimated Costs

Service Cost (EUR) Warranty
Sensor replacement 150-300€ 2 years
Wiring repair 200-450€ 1 year
Diagnostic 80-150€ –

8. Important Tips

  1. Use only ACDelco sensors
  2. Always check the entire wiring
  3. Reset adaptations after repair

9. FAQ

Q: Can I drive with this code?
→ Limited to 50 km maximum

Q: Why prefer OEM parts?
→ Failure rate <5% vs >40% for generic parts

Q: Recommended prevention?

  • Regular oil changes
  • Annual wiring inspection
  • Connector cleaning

10. Conclusion

To permanently resolve P1393:

  1. Complete diagnostic with GM scanner
  2. Thorough electrical verification
  3. Use of original parts

⚠ Important: Consult a certified GM technician for recurring problems. 3.6L engines require special attention to chain tension.

Cadillac Fault Code P1393 – Complete Technical Guide

1. Meaning of Code Cadillac P1393

The P1393 code on Cadillac indicates:
“Intermittent failure of the Camshaft Position (CMP) sensor circuit – Bank 1”

Immediate consequences:

  • Illumination of the “Check Engine” light
  • Possible engine performance limitation
  • Risk of hard starting in cold weather

2. Affected Cadillac Models

Model Engine Years Critical Mileage
CTS 3.6L V6 (LGX) 2016-2023 80,000-130,000 km
Escalade 6.2L V8 (L87) 2021-2023 50,000-90,000 km
XT5 2.0L Turbo (LSY) 2017-2023 60,000-100,000 km
ATS 2.5L I4 (LCV) 2013-2019 100,000-150,000 km

3. Main Causes

A. Electrical Problems (75%)

  • Faulty CMP sensor (GM P/N 12677925)
  • Damaged wiring (critical area: engine harness passage)
  • Corroded CMP connector (frequent oxidation)
  • Unstable power supply (4.5-5.5V required)

B. Mechanical Problems (20%)

  • Excessive camshaft play
  • Metal deposits on the tone wheel
  • Timing issue (chain/ring)

C. Other Causes (5%)

  • Partial ECM failure
  • Software requiring update
  • Grounding issue (G110)

4. Diagnostic Procedure

Step 1 – Initial Checks

  1. Visual inspection of the sensor and connector
  2. Check oil level (5W-30 Dexos2)
  3. Search for associated codes (P0016, P0340)

Step 2 – Electrical Tests

Test Method Normal Values
Power supply voltage Ignition ON 5V ±0.5V
CMP resistance Sensor disconnected 500-1500Ω
Signal Oscilloscope Stable square signal

Step 3 – Advanced Checks

  1. Data analysis with GDS2 scanner
  2. Inspection of timing chain (3.6L)
  3. Check oil pressure (>25 psi)

5. Solutions by Engine

For 3.6L V6 (LGX)

  • Replace CMP sensor (improved version)
  • Inspect chain tensioner
  • Clean ECM connector X1

For 6.2L V8 (L87)

  • Check wiring near exhaust manifolds
  • Inspect AFM/DoD system
  • ECM software update

For 2.0L Turbo (LSY)

  • Complete CMP circuit inspection
  • Check turbo and oil lines
  • Clean connectors

6. Key Technical Data

  • Tightening torque: 10 Nm
  • Sensor gap: 0.8-1.6mm
  • Inspection interval: 100,000 km

7. Repair Costs

Service Cost (CAD) Warranty
Sensor replacement $200-400 2 years
Wiring repair $300-600 1 year
Diagnostic $100-180 –

8. Mistakes to Avoid

  • Using non-OEM sensors
  • Neglecting wiring inspection
  • Forgetting to reset adaptations

9. Technical FAQ

Q: Risk to the engine?
→ Possible VVT damage if ignored

Q: Temporary driving possible?
→ Maximum 50 km at moderate RPM

Q: Difference with P0340?
→ P1393 = performance problem, P0340 = open circuit

10. Post-Repair Procedure

  1. Clear codes with GDS2
  2. Perform a break-in cycle:
  • 20 min at 2000-2500 RPM
  • 3 stop/starts
  1. Check CMP parameters

11. Prevention Tips

  • Strict oil changes (max 10,000 km)
  • Annual wiring inspection
  • Use Dexos2 oil
  • Clean connectors every 2 years

12. Conclusion

To resolve P1393 on Cadillac:

  1. Complete diagnostic with GDS2
  2. Thorough electrical verification
  3. Use GM Original parts

⚠ Important: Recurring problems often require a full engine harness inspection. Consult a certified Cadillac technician for complex cases.

Chevrolet Fault Code P1393

Definition Chevrolet P1393

The Chevrolet P1393 code is an OBD-II diagnostic code that means “Crankshaft Position System Variation Not Learned”. This code primarily concerns General Motors (GM) vehicles, including Chevrolet models.

Possible Causes

  1. Crankshaft Position Sensor Variation Not Programmed – The PCM (Powertrain Control Module) has not recorded the sensor’s variation values.
  2. Problem with the Crankshaft Position Sensor (CKP) – Failure or malfunction.
  3. Wiring Issues – Damaged wires, loose connectors, or corrosion in the CKP sensor circuit.
  4. Mechanical Problems – Damage to the flywheel or reluctor ring (broken teeth or excessive wear).
  5. Problem with the PCM – Software or hardware failure of the control module.

Common Symptoms

  • Engine Hard to Start or frequent stalling
  • Unstable Idle
  • Loss of Power or reduced performance
  • Check Engine Light (MIL) illuminated

Diagnosis and Repair

  1. Check the CKP Sensor – Visually inspect and test its resistance.
  2. Inspect Wiring and Connectors – Look for cut wires, short circuits, or corrosion.
  3. Perform a Crankshaft Variation Learning Procedure (requires a GM/Chevrolet compatible diagnostic tool).
  4. Scan the PCM – Check for other fault codes and live data from the CKP sensor.
  5. Replace the CKP Sensor or Repair Wiring if necessary.

Important Note

Some Chevrolet models require a reset with a professional diagnostic tool (such as Tech2 or a compatible GM MDI tool) to properly record the crankshaft variation.

If the problem persists after these checks, it may be necessary to have the PCM inspected by a professional.

Ford Fault Code P1393

The Ford P1393 code has a different meaning than at Chevrolet/GM. At Ford, this code generally corresponds to:

Definition

P1393 – Camshaft Position (CMP) Sensor Circuit Range/Performance
This code indicates that the Powertrain Control Module (PCM) has detected an abnormal signal from the Camshaft Position (CMP) sensor.

Possible Causes

  1. Faulty CMP Sensor – The sensor is not providing a correct signal to the PCM.
  2. Wiring or Connector Issues – Damaged wires, short circuits, poor contact.
  3. Timing Problem – Incorrect synchronization between the camshaft and the crankshaft.
  4. Reluctor (Toothed Wheel) Defect – Damaged or worn teeth on the CMP sensor wheel.
  5. PCM Problem – Internal failure of the control module (rare).

Common Symptoms

  • Hard Starting Engine (especially when cold)
  • Misfires or unstable idle
  • Loss of Power and reduced performance
  • Malfunction Indicator Lamp (MIL) illuminated

Diagnosis and Repair

1. Check the CMP Sensor

  • Resistance Test (if applicable, depending on the model).
  • Visual Inspection (cracks, physical damage).
  • Signal Check with an oscilloscope or diagnostic tool.

2. Inspect Wiring and Connectors

  • Check the wires between the CMP sensor and the PCM.
  • Look for short circuits, breaks, or corrosion.

3. Check Engine Timing

  • If the timing belt has jumped or is misaligned, it can affect the CMP signal.

4. Replace the CMP Sensor if Necessary

  • Some Ford models use magnetic or Hall effect CMP sensors.

5. Reset the PCM After Repair

  • Clear the code and check if it returns.

Important Note

On some Ford models (such as the Focus, F-150, Escape), a faulty CMP sensor can also trigger P0340 or P0345 codes.

If the problem persists after replacing the sensor, check:
✅ The sensor’s supply voltage (usually 5V or 12V depending on the model).
✅ The condition of the camshaft’s reluctor (toothed wheel).

GMC Fault Code P1393

Definition GMC P1393

P1393 – Crankshaft Position System Variation Not Learned
The Engine Control Module (ECM) has not been able to record the variation values of the Crankshaft Position Sensor (CKP). This is necessary for optimal engine operation.

Possible Causes

  1. Learning Procedure Not Performed – The ECM needs to be recalibrated after certain repairs.
  2. Problem with the CKP Sensor – Failure, bad signal, or incorrect installation.
  3. Damaged Wiring or Faulty Connectors – Short circuit, corrosion, or poor contact.
  4. Mechanical Problem – Damaged teeth on the flywheel or reluctor ring.
  5. ECM Failure – Rare, but possible in case of software or hardware issues.

Common Symptoms

  • Hard Starting (especially when hot)
  • Unstable Idle or stalling
  • Loss of Power and hesitant acceleration
  • Malfunction Indicator Lamp (MIL) Illuminated

Diagnosis and Repair

1. Perform the CKP Learning Procedure

  • Requires a compatible GM diagnostic tool (Tech2, Snap-On, Autel, etc.).
  • The procedure varies by model (consult vehicle specifications).

2. Check the CKP Sensor

  • Resistance Test (check specific values in the repair manual).
  • Visual Inspection (cracks, damage, correct positioning).

3. Inspect Wiring and Connectors

  • Check the wires between the CKP sensor and the ECM.
  • Look for short circuits, breaks, or oxidation.

4. Examine the Flywheel/Reluctor Ring

  • Check the condition of the teeth (no breaks or excessive wear).

5. Reset the ECM After Repair

  • Clear the code and check if it returns after a drive cycle.

Affected GMC Models

This problem can occur on various models, including:

  • GMC Sierra (1500, 2500, etc.)
  • GMC Yukon / Yukon XL
  • GMC Canyon
  • GMC Acadia
  • Other vehicles with GM engines (e.g., Vortec, EcoTec, etc.)

Important Note

  • Some models require an advanced diagnostic tool to perform the CKP learning.
  • If the code returns after repair, check:
    ✅ The CKP sensor supply voltage (typically 5V or 12V).
    ✅ The absence of mechanical issues (timing belt, synchronization).

Honda Code P1393 – Crankshaft Position (CKP) or Camshaft Position (CMP) Problem

Meaning of Honda P1393

The P1393 code on Honda vehicles typically indicates a problem with intermittency or mismatch between the signals from the crankshaft position sensor (CKP) and the camshaft position sensor (CMP).

Possible Causes

  1. Faulty CKP sensor (crankshaft)
  2. Faulty CMP sensor (camshaft)
  3. Wiring issue or corroded/cut connectors
  4. Timing problem (misaligned timing belt)
  5. Reluctor fault (damaged gear wheel)
  6. PCM issue (rare)

Common Symptoms

  • Engine hard to start (especially when cold)
  • Misfires at idle or during acceleration
  • Unstable idle
  • Noticeable power loss
  • Check engine light on

Recommended Diagnosis

  1. Check the CKP and CMP sensors
  • Visual inspection (cracks, damage)
  • Resistance measurement (compare with specific values)
  • Signal analysis with an oscilloscope
  1. Inspect the wiring
  • Check continuity between sensors and PCM
  • Look for short circuits or corrosion
  1. Check the timing
  • Verify alignment of timing marks
  • Check the condition of the timing belt/chain
  1. Examine the gear wheels
  • Check for missing or broken teeth on the reluctors

Repair

  • Replace the faulty sensor (CKP or CMP)
  • Repair wiring if necessary
  • Reset the timing if there is a synchronization issue
  • Clear the codes and perform a road test

Affected Honda Models

This issue can occur on various Honda models, including:

  • Civic
  • Accord
  • CR-V
  • Odyssey
  • And other models with F, K, or J series engines

Important note: Some Honda models require a specific relearn procedure after replacing the sensors. A diagnostic tool may be necessary for certain operations.

P1393 Isuzu Code – Diagnosis and Solutions

Meaning of Isuzu P1393 Code

The P1393 code on Isuzu vehicles typically indicates a problem with the crankshaft position (CKP) system, often related to an unperformed learning procedure or a faulty sensor.

Specific Interpretation

In Isuzu (often sharing GM technology), P1393 typically means:
“Crankshaft Position System Variation Not Learned”

Probable Causes

  1. Unperformed learning procedure after replacing the CKP sensor or ECU
  2. Faulty crankshaft position sensor (CKP)
  3. Wiring problems (short circuits, breaks, corrosion)
  4. Faulty flywheel (damaged teeth)
  5. Engine timing problem
  6. ECU failure (less common)

Common Symptoms

  • Starting difficulty
  • Unstable idle
  • Loss of power
  • Intermittent stalling
  • Check engine light on

Diagnostic Procedure

  1. Check the CKP sensor:
  • Measure resistance (check specific values)
  • Visual inspection
  • Test signal with oscilloscope
  1. Inspect wiring:
  • Check continuity between sensor and ECU
  • Look for short circuits to ground
  1. Check flywheel:
  • Check tooth condition
  • Look for physical damage
  1. Perform learning procedure:
  • Requires compatible Isuzu diagnostic tool

Recommended Solutions

  1. Perform CKP learning procedure (with scan tool)
  2. Replace CKP sensor if faulty
  3. Repair wiring if necessary
  4. Check engine timing
  5. Replace flywheel if teeth are damaged

Affected Isuzu Models

This code may appear on various Isuzu models, including:

  • D-Max
  • Rodeo
  • Trooper
  • NPR (diesel versions)
  • Other models sharing GM platform

Important note: The exact reset procedure may vary depending on model and year. A professional diagnostic tool is often required to properly perform the CKP system learning.